Skip to main content

1960s Dress Sequin

to
19
249
44
322
308
301
7
5
3
1
1
1
1
1
1
10
9
7
7
5
Sort By
Printed cocktail dress with sequin allover Circa 1960's
Printed cocktail dress with sequin allover Circa 1960's

Printed cocktail dress with sequin allover Circa 1960's

Located in Saint-Ouen-Sur-Seine, FR

Printed cocktail dress with sequin allover. No fabric tag composition but the main fabric is probably silk and lining is probably acetate or rayon. Split in the middle back , lenght...

Category

1960s Hong Kong Cocktail Dresses

Unsigned Gold Sequin Tunic Mini Dress 1960s Style
Unsigned Gold Sequin Tunic Mini Dress 1960s Style

Unsigned Gold Sequin Tunic Mini Dress 1960s Style

Located in Boca Raton, FL

The designer of this tunic dress is unknown, but that makes it no less spectacular. Done in alternating boxes of matte and shiny gold sequins that create a lattice design, this dazzl...

Category

1990s Unknown Mini Dress

1960s Cream Beaded Sequinned Shift Dress
1960s Cream Beaded Sequinned Shift Dress

1960s Cream Beaded Sequinned Shift Dress

Located in London, GB

Late 1960s or early 1970s mini dress in a pale cream / off white colour, with an elaborate roundel design edged in gold sequins, both front and back, at intervals.

Category

1960s American Cocktail Dresses

1960s Sequinned Couture Made Brown Dress
1960s Sequinned Couture Made Brown Dress

1960s Sequinned Couture Made Brown Dress

Located in London, GB

This late 1960s couture brown silk maxi dress is beautifully made; we love the frothy sheer bell-sleeves and full, swirling skirt.

Category

1960s American Evening Dresses

Navy Sequin Evening Dress Early 1960s
Navy Sequin Evening Dress Early 1960s

Navy Sequin Evening Dress Early 1960s

Located in London, GB

Exquisite early 1960's evening dress of navy blue cotton velvet completely embellished with complimenting iridescent blue sequins forming stylised sacred heart motifs.

Category

20th Century Evening Dresses

Vintage 1960's Black and Gold Sequin Maxi Dress Size M L
Vintage 1960's Black and Gold Sequin Maxi Dress Size M L

Vintage 1960's Black and Gold Sequin Maxi Dress Size M L

Located in Los Angeles, CA

This vintage 1960's maxi gown is composed of a black & gold sequin knit with a gorgeous neckline and long sleeves. The rayon lining can be removed or made larger to suit the buyers n...

Category

1960s American Evening Gowns

1960s Christian Dior Monochromed Sequin Maxi Dress
1960s Christian Dior Monochromed Sequin Maxi Dress

1960s Christian Dior Monochromed Sequin Maxi Dress

By Christian Dior

Located in London, GB

This elegant Christian Dior evening dress was retailed in their London branch during the late 1960s and may have been a special order from Paris.

Category

1960s British Evening Dresses

Vintage 1960's yellow sequin beaded cocktail dress wiggle dress UK 12 US 8
Vintage 1960's yellow sequin beaded cocktail dress wiggle dress UK 12 US 8

Vintage 1960's yellow sequin beaded cocktail dress wiggle dress UK 12 US 8

Located in Nashville, TN

This breathtaking 1960's yellow knitted wool dress, embellished in its entirety with clear iridescent sequins, and finished with floral beaded details in yellow rocaille beads, and i...

Category

1960s Cocktail Dresses

Bob Bugnand Sam Friedlander Aurora Borealis Sequin Paisley Mini Dress 1960s XS
Bob Bugnand Sam Friedlander Aurora Borealis Sequin Paisley Mini Dress 1960s XS

Bob Bugnand Sam Friedlander Aurora Borealis Sequin Paisley Mini Dress 1960s XS

By Bob Bugnand for Sam Friedlander, Bob Bugnand

Located in North Attleboro, MA

Such a fun cocktail dress! This vintage late 1960s designer Bob Bugnand dress is an explosion of color, with a multi-colored Indian paisley print fabric completely covered in transpa...

Category

1960s American Mini Dress

Black knit cocktail dress with covered of round sequin Circa 1960's
Black knit cocktail dress with covered of round sequin Circa 1960's

Black knit cocktail dress with covered of round sequin Circa 1960's

Located in Saint-Ouen-Sur-Seine, FR

Black knit cocktail dress with covered of round sequin.; Zip and hook&eye closure on the middle back. Acetate lining. SIZE XS

Category

1960s Cocktail Dresses

Silk Dress Embroidered with Sequins, 1960s-1970s
Silk Dress Embroidered with Sequins, 1960s-1970s

Silk Dress Embroidered with Sequins, 1960s-1970s

Located in SAINT-OUEN-SUR-SEINE, FR

Silk dress embroidered with sequins and beads. Circa 1960s-1970s.

Category

20th Century Evening Gowns

Vintage 1960's Pink Sequin Peal Silk Organza Column Dress Cocktail Dress UK 8-10
Vintage 1960's Pink Sequin Peal Silk Organza Column Dress Cocktail Dress UK 8-10

Vintage 1960's Pink Sequin Peal Silk Organza Column Dress Cocktail Dress UK 8-10

Located in Nashville, TN

This truly spectacular 1960's silk organza dress, embellished in a striped pattern of pearlescent beads, silver sequins and large pink pearlescent sequins, is a masterpiece to behold...

Category

1960s Cocktail Dresses

1960s William Travilla Green and Blue Sequin Dress
1960s William Travilla Green and Blue Sequin Dress

1960s William Travilla Green and Blue Sequin Dress

By William Travilla

Located in London, GB

This is a late 1960s or early 1970s couture sequinned maxi gown by William Travilla whose name is synonymous with Marilyn Monroe for whom he worked as a costume designer from 1952.

Category

1960s American Evening Gowns

1960s Arnold Scaasi Red Silk Cocktail Dress with Embroidery & Sequins
1960s Arnold Scaasi Red Silk Cocktail Dress with Embroidery & Sequins

1960s Arnold Scaasi Red Silk Cocktail Dress with Embroidery & Sequins

By Arnold Scaasi

Located in Sharon, CT

Red evening dress of delicate fabric possibly silk/polyester mix. Sequined flowers and embroidered leaves. Zipper in back. Sleeves 23". Approximate size US 8. Dress is fully lined in...

Category

1960s American Cocktail Dresses

Givenchy Spaghetti Strap Blue Sequins Cocktail Dress, 1960s
Givenchy Spaghetti Strap Blue Sequins Cocktail Dress, 1960s

Givenchy Spaghetti Strap Blue Sequins Cocktail Dress, 1960s

By Givenchy

Located in Beverly Hills, CA

Beautiful Vintage Givenchy late 60s cobalt blue,green and purple spaghetti strap cocktail dress completely covered in hand stitched sequins. Very flattering fit with nipped waist and...

Category

1960s French Evening Gowns

1960s Black Sequin Bodice and Georgette Dress
1960s Black Sequin Bodice and Georgette Dress

1960s Black Sequin Bodice and Georgette Dress

Located in London, GB

Original 1960s black sequinned dress which would make the perfect occasion dress.

Category

1960s British Cocktail Dresses

CARVEN COUTURE PARIS 1960's Black Sequin Dress with Structured Shoulders Size 2
CARVEN COUTURE PARIS 1960's Black Sequin Dress with Structured Shoulders Size 2

CARVEN COUTURE PARIS 1960's Black Sequin Dress with Structured Shoulders Size 2

By Carven

Located in Los Angeles, CA

This Carven Couture dress is composed of a black fabric with sequin applique at the shoulders and a flower on a the front pocket. Features a darted shoulder design and zipper closure...

Category

1960s French Cocktail Dresses

Vintage 1960's Black Sequin Lace Gown Size 10
Vintage 1960's Black Sequin Lace Gown Size 10

Vintage 1960's Black Sequin Lace Gown Size 10

Located in Los Angeles, CA

This vintage 1960's gown is composed of a black sequin lace. Features a sweetheart neckline. There is a center back zipper closure. In great vintage condition, there is some discolor...

Category

20th Century American Evening Gowns

1960s Gold & Silver Sequin Rhinestone Dress possibly Pierre Cardin
1960s Gold & Silver Sequin Rhinestone Dress possibly Pierre Cardin

1960s Gold & Silver Sequin Rhinestone Dress possibly Pierre Cardin

By I Magnin and Co

Located in Boca Raton, FL

Possibly created by renowned Italian-French designer Pierre A. Cardin, this 1960’s dress is an incredible statement piece. Done in gold and silver sequins with prong-set crystal rhin...

Category

1960s Unknown Evening Dresses and Gowns

1960s Cream Silk Beaded Sequin Custom Cocktail Dress
1960s Cream Silk Beaded Sequin Custom Cocktail Dress

1960s Cream Silk Beaded Sequin Custom Cocktail Dress

Located in Los Angeles, CA

1960s custom cocktail dress Cream silk Hand beaded and sequined Back slit and zipper Fully lined Personal property of actress Maria Bello

Category

1950s Cocktail Dresses

1960s Calderón Long-Sleeve Black Sequin Checkerboard Wool Maxi Dress
1960s Calderón Long-Sleeve Black Sequin Checkerboard Wool Maxi Dress

1960s Calderón Long-Sleeve Black Sequin Checkerboard Wool Maxi Dress

By Calderon

Located in London, GB

This beautifully crafted dress was designed by Calderón in the late 1960s and is similar to Geoffrey Beene designs from the era.

Category

1960s American Evening Dresses

Mollie Parnis Emerald Green Mock Neck Sequin Dress, 1960s
Mollie Parnis Emerald Green Mock Neck Sequin Dress, 1960s

Mollie Parnis Emerald Green Mock Neck Sequin Dress, 1960s

By Mollie Parnis

Located in Boca Raton, FL

Her success boomed in the 50s and 60s with her designs being donned by multiple First Ladies, and particularly adored by Lady Bird Johnson. Made in a sequins-covered, Kelly green lur...

Category

1960s American Evening Dresses

1960s Black Plastic Sequin Cocktail Dress Size 6
1960s Black Plastic Sequin Cocktail Dress Size 6

1960s Black Plastic Sequin Cocktail Dress Size 6

By Bullocks

Located in Los Angeles, CA

This fabulous fully HAND-BEADED cocktail dress is composed of large, dime sized black flat plastic sequins. Features a classic 'Wiggle Dress' style with a center back zipper closure....

Category

20th Century American Cocktail Dresses

Peggy Hunt Pink Linen Sleeveless Shift Dress with Sequin Embellishment, 1960s
Peggy Hunt Pink Linen Sleeveless Shift Dress with Sequin Embellishment, 1960s

Peggy Hunt Pink Linen Sleeveless Shift Dress with Sequin Embellishment, 1960s

By Peggy Hunt

Located in San Francisco, CA

Peggy Hunt vintage pink linen dress from the late 50s/early 60s. Sequin stripe accents throughout bodice. Back zip and hook and eyes at top and waistband. Linen, fully lined. No si...

Category

1960s Unknown Shift Dresses

Ivory Knit Body Con Dress with Iridescent Sequins, 1960s
Ivory Knit Body Con Dress with Iridescent Sequins, 1960s

Ivory Knit Body Con Dress with Iridescent Sequins, 1960s

Located in Los Angeles, CA

Reminiscent of Marilyn Monroe's "JFK Birthday Dress". Absolutely stunning iridescent blush body-con dress. A soft wool knit that hugs curves and allows them! Stretchy and fully sequi...

Category

20th Century Day Dresses

Sydney North Beige Crepe Jersey Oversize Pearl Sequin Wiggle Dress Medium, 1960s
Sydney North Beige Crepe Jersey Oversize Pearl Sequin Wiggle Dress Medium, 1960s

Sydney North Beige Crepe Jersey Oversize Pearl Sequin Wiggle Dress Medium, 1960s

By SYDNEY NORTH

Located in San Diego, CA

Exceptional vintage 60s SYDNEY NORTH beige crepe jersey wiggle dress! Features hand sewn oversized pearls, sequins and beads at the front bust, acting as a chic collar.

Category

1960s American Cocktail Dresses

Hubert de Givenchy Haute Couture Amber‑Sequin Halter Gown c. 1960’s
Hubert de Givenchy Haute Couture Amber‑Sequin Halter Gown c. 1960’s

Hubert de Givenchy Haute Couture Amber‑Sequin Halter Gown c. 1960’s

By Givenchy

Located in Kingston, NY

A certified haute couture gown by Hubert de Givenchy himself, featuring a shimmering amber‑toned sequin and paillette‑encrusted halter bodice and softly gathered flowing silk chiffon...

Category

1960s French Evening Gowns

SE'MONT 1960's Silk Aqua Halter with Sequins & Bead Embellishments Size 2 4
SE'MONT 1960's Silk Aqua Halter with Sequins & Bead Embellishments Size 2 4

SE'MONT 1960's Silk Aqua Halter with Sequins & Bead Embellishments Size 2 4

Located in Los Angeles, CA

This cocktail dress is composed of an aqua silk with sequin and bead embellishments. There is a center front bow with zipper closure, and halter style. In great vintage condition. ...

Category

1960s American Cocktail Dresses

Custom 1960's Sapphire Blue Beaded Gown with Sequins Size Small Medium
Custom 1960's Sapphire Blue Beaded Gown with Sequins Size Small Medium

Custom 1960's Sapphire Blue Beaded Gown with Sequins Size Small Medium

Located in Los Angeles, CA

This dress features heavy embellishment with beading and sequins in hues of blue. There is a leaf motif in beading and iridescent sequins. Center back zipper closure. In excellent vi...

Category

20th Century Unknown Evening Gowns

1960s Nat Kaplan Gold Sequin Rhinestone Encrusted Vintage 60s Evening Gown Dress
1960s Nat Kaplan Gold Sequin Rhinestone Encrusted Vintage 60s Evening Gown Dress

1960s Nat Kaplan Gold Sequin Rhinestone Encrusted Vintage 60s Evening Gown Dress

By Nat Kaplan

Located in San Diego, CA

Stunning early 1960s NAT KAPLAN gold sequin and rhinestone encrusted sleeveless evening gown ! Thousands of hand-sewn star shaped gold sequins throughout the bodice, with golden rhin...

Category

1960s American Evening Gowns

Victoria Royal 1960s Kelly Green Silk Satin Sequined + Beaded Vintage Gown Dress
Victoria Royal 1960s Kelly Green Silk Satin Sequined + Beaded Vintage Gown Dress

Victoria Royal 1960s Kelly Green Silk Satin Sequined + Beaded Vintage Gown Dress

By Victoria Royal

Located in San Diego, CA

Sensational vintage 60s VICTORIA ROYAL Couture Kelly green full length evening gown! Fitted bodice features thousands of hand-sewn sequins and beads throughout. Metal zipper at each ...

Category

1960s Hong Kong Evening Gowns

HAUTE COUTURE INTERNATIONAL 1960's Black Beaded and Sequin Lace Gown Size 6
HAUTE COUTURE INTERNATIONAL 1960's Black Beaded and Sequin Lace Gown Size 6

HAUTE COUTURE INTERNATIONAL 1960's Black Beaded and Sequin Lace Gown Size 6

By HAUTE COUTURE INTERNATIONAL

Located in Los Angeles, CA

This Haute Couture International gown is composed of a black beaded and sequin lace. There is a side slit and center back zipper closure. In excellent vintage condition. **Ple...

Category

1960s Hong Kong Evening Gowns

1960s Demi Couture Turquoise Blue Silk Chiffon Paillette Sequin Vintage Dress
1960s Demi Couture Turquoise Blue Silk Chiffon Paillette Sequin Vintage Dress

1960s Demi Couture Turquoise Blue Silk Chiffon Paillette Sequin Vintage Dress

Located in San Diego, CA

Beautiful vintage 60s demi couture turquoise blue silk chiffon paillette sequin encrusted dress ! Features a tailored bodice encrusted with hundreds of iridescent paillttes. Two pane...

Category

1960s Cocktail Dresses

Black Fish Scale Sequin Sheath Dress with Draped Ruched Hobble Skirt – XS, 1960s
Black Fish Scale Sequin Sheath Dress with Draped Ruched Hobble Skirt – XS, 1960s

Black Fish Scale Sequin Sheath Dress with Draped Ruched Hobble Skirt – XS, 1960s

Located in Tucson, AZ

This poured-on wiggle dress attracts serious attention on two fronts: first, its aurora borealis sequins shimmer green and purple to resemble eye-catching fish scales. Second, its dr...

Category

1960s American Evening Dresses

Gorgeous 1960s Kiki Hart Navy Blue Gold Sequin Vintage 60s Gown Evening Dress
Gorgeous 1960s Kiki Hart Navy Blue Gold Sequin Vintage 60s Gown Evening Dress

Gorgeous 1960s Kiki Hart Navy Blue Gold Sequin Vintage 60s Gown Evening Dress

By Kiki Hart New York, Kiki Hart

Located in San Diego, CA

Gorgeous late 1960s KIKI HART navy blue and gold sequined chiffon long sleeve gown! Features a nude taffeta underlay that peaks through the bottom layer of the asymmetrical hem. Hund...

Category

1960s American Evening Gowns

1960s Lime Green Fully Sequined 3/4 Sleeves Vintage 60s Wool Dress
1960s Lime Green Fully Sequined 3/4 Sleeves Vintage 60s Wool Dress

1960s Lime Green Fully Sequined 3/4 Sleeves Vintage 60s Wool Dress

By Gene Shelley International Boutique

Located in San Diego, CA

Chic early 60s vintage lime green fully sequined 3/4 sleeves wool dress ! Features thousands of hand-sewn sequins throughout the entire dress. Fully lined in rayon with full metal zi...

Category

1960s Hong Kong Cocktail Dresses

1960s Sydney North Size 6 Beige Khaki Tan Beaded Sequin Vintage 60s Dress
1960s Sydney North Size 6 Beige Khaki Tan Beaded Sequin Vintage 60s Dress

1960s Sydney North Size 6 Beige Khaki Tan Beaded Sequin Vintage 60s Dress

By SYDNEY NORTH

Located in San Diego, CA

Beautiful and extremely flattering 1960 SYDNEY NORTH beige / khaki beaded dress! Features a front high neck, with plunging back. Neckline is embellished with hundreds of hand-sewn be...

Category

1960s American Cocktail Dresses

1960s Black Sheer and Sequin Gown Ensemble
1960s Black Sheer and Sequin Gown Ensemble

1960s Black Sheer and Sequin Gown Ensemble

Located in Toronto, Ontario

Stunning black sheer and beaded gown and bolero. Reminiscent of the slinky beaded and net gowns from the 1940's. Spaghetti straps with a v-neck line and a faux wrap style bodice. Sma...

Category

1960s French Evening Gowns

  • 1
Get Updated with New Arrivals
Save "1960 S Dress Sequin", and we’ll notify you when there are new listings in this category.

1960s Dress Sequin For Sale on 1stDibs

Find the exact vintage or contemporary 1960s dress sequin you’re shopping for in the variety available on 1stDibs. If you’re looking for an option in Black and you’re unable to find the right fit, there are plenty of variations in Brown, Gray and more. If you’re looking for a 1960s dress sequin from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 18th Century while another version may have been produced as recently as the 21st Century. Finding an appealing accessory such as this — no matter the origin — is easy, but Gene Shelly, Norman Norell and Malcolm Starr each produced a popular version that is worth a look. If you’re browsing our inventory for these accessories, you’ll find that many are available today for women, but there are still pieces to choose from for men and unisex.

How Much is a 1960s Dress Sequin?

The price for a 1960s dress sequin starts at $175 and tops out at $56,553, and on average, selling for $800.

Finding the Right Evening-dresses for You

With entire museum exhibitions dedicated to examining fashion designers and their creations, we’re finally recognizing that costuming is art. Evening dresses over time have conveyed specific statements about social class, position and beliefs. Fashion is a powerful means of self-expression, and sophisticated vintage evening dresses and gowns by our favorite couturier play no small role in making us feel wonderful but, perhaps more importantly, making us feel like ourselves.

In the 16th century, dresses and gowns were so important that England's Queen Elizabeth I defined rules about what dresses women could wear — guidance included long skirts and fitted bodices. Forward-thinking designers have responded to this history.

Gabrielle “Coco” Chanel reimagined traditionally masculine garments for feminine shapes, and her elegant evening dresses and gowns promoted comfort and grace in women’s wear that had been dominated in the previous century by layers of fabric. Christian Dior's gowns celebrated luxury and femininity in the late 1940s — and gave to women the gift of glamour they’d lost in the miserable years of the war. French fashion designer Yves Saint Laurent introduced innovative and highly coveted dress designs in the 1960s while at the same time challenging sexist stereotypes about which members of society could wear tuxedos.

Works by unconventional British designer John Galliano — featured in houses like Givenchy and Dior — redefined limits that dressmakers faced in terms of material, construction and vision during the late 20th century. From his embroidered absinthe-green Oscars gown for actress Nicole Kidman to the iconic sleeveless Dior newspaper dress that Sex and the City’s Carrie Bradshaw made famous, Galliano’s intricate and multifaceted work is reliably collectible and newsworthy

Today’s designers target an increasingly broad audience with their boundary-crossing work, and their tendency to play off of each other’s ideas means that every walk down the runway is also a walk through an entire history of fashion design and dress craftsmanship.

Whether you gravitate toward backless maxi dresses or silk charmeuse gowns by Alexander McQueen or embellished, ruffled floral-print designs by Chloe or Versace, there is an extraordinary collection of vintage and designer evening dresses and gowns waiting for you on 1stDibs.

Questions About 1960s Dress Sequin
  • 1stDibs ExpertMarch 15, 2024
    Whether you wear a necklace with a sequin dress is up to you. A necklace can put an attractive finishing touch on a dress that features sequin embellishments. However, you may wish to choose a simple piece, such as a chain necklace, a small pendant or a single string of pearls, in order to keep attention focused on the dress. Consider the shape and depth of the neckline when selecting a necklace to pair with your dress. Find a diverse assortment of necklaces on 1stDibs.
  • 1stDibs ExpertFebruary 21, 2024
    The dresses they wore in the 1960s varied depending on the time of day and the occasion. For everyday wear, many women opted for simply tailored frocks called shift dresses. They often featured bold geometric prints in eye-catching colors. In the evening, women tended to opt for gowns with plunging necklines, fitted waists and flowing full skirts. On 1stDibs, shop a diverse assortment of vintage dresses from the 1960s.
  • 1stDibs ExpertSeptember 27, 2024
    What the dress style was called in the 1960s varied, as there were several types of dresses that were fashionable during the decade. At the start of the 1960s, many women wore swing dresses featuring fitted bodices and full skirts. Collared, button-up belted dresses called shirtwaist dresses were also popular, as were loose-fitting, flowy shift dresses. By the late 1960s, new styles emerged, such as flared, flowing tent dresses, sleeveless jumpers usually styled over sweaters and blouses and drop-waist dresses, which had their waist seams at the hips rather than the natural waist. Find a variety of 1960s dresses and other vintage dresses on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    To tell if a dress is from the 1960s or 1970s, first look for a label. You may be able to determine the approximate date of the dress simply by researching the designer using reputable online sources. Also, check the zippers. Dresses from the 1960s will usually have metal or nylon zippers. Ones from the 1970s are more likely to be plastic. You'll find a large selection of vintage dresses on 1stDibs.

Read More

Barbra Streisand Channeled Klimt’s ‘Woman in Gold’ in This Shimmering Dress

Costumer to the stars Ray Aghayan brought the famed painting to life with his spectacular design.

A Chanel Obsessive’s Cache Extends Well beyond Her Walk-In Closet

From handbags and heels to jackets and jewels, Sharon Coplan Hurowitz has a deep admiration for (and collection of) all things Chanel.

Behind the 1970s and ’80s Glam of ‘Halston’ with the Hit Show’s Costume Designer

Jeriana San Juan explains how she undertook the intimidating project of designing costumes for the new Netflix series about the New York fashion legend. (Hint: She found vintage Halston on 1stDibs!)

A Short History of Capri Pants, on the 100th Birthday of Their Inventor

Once considered a controversial item of clothing, fashion designer Sonja de Lennart's creation is now a bona fide classic.

How the Chanel Jacket Forever Changed What Women Wear

The classic tweed garment has been a wardrobe staple of chic women around the world since the 1950s.

A Pair of Shoes — Heels or Flats — Can Tell an Impactful Story

Amanda Benchley and Bridget Moynahan teamed up to explore the relationship between powerful women and their most significant footwear.

You Saw It at the Met Ball. Here’s What Camp Fashion Is Really About

This year's Costume Institute exhibition is all about embracing the eccentric.

The V&A Takes a Fresh Look at the New Look’s Pioneering Progenitor, Christian Dior

Ballrooms, Bar Suits and British royals — in a sweeping exhibition, the London museum looks back on 70 years of the French fashion house, as well as its illustrious founder and his fondness for the United Kingdom.