VERSACE La Greca 90's logo black nylon backpack bag
By Versace
Located in Hong Kong, NT
VERSACE La Greca 90's logo black nylon backpack bag Reference: TGAS/C00584 Brand: Versace Model: 1002886 1A02180 2B77E Material: Nylon Closure: Zip Extra Details: Black technical nyl...
$707Sale Price|30% Off
Versace La Greca Monogram Large Grey Tote Bag with Medusa Print
By Versace
Located in PUTNEY, NSW
Versace La Greca Monogram Large Grey Tote Bag with Medusa Print Elevate your style with the Versace La Greca Monogram Large Grey Tote Bag, a masterpiece of luxury and functionality.
VERSACE La Greca 90's logo black nylon backpack bag
By Donatella Versace, Versace
Located in Hong Kong, NT
VERSACE La Greca 90's logo black nylon backpack bag Reference: TGAS/C00348 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collection: La Greca Material: Nylo...
VERSACE La Greca 90's logo black nylon backpack bag
By Versace
Located in Hong Kong, NT
VERSACE La Greca 90's logo black nylon backpack bag Reference: TGAS/C00349 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collection: La Greca Material: Nylo...
VERSACE La Greca 90's logo black nylon backpack bag
By Donatella Versace, Versace
Located in Hong Kong, NT
VERSACE La Greca 90's logo black nylon backpack bag Reference: TGAS/C00582 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collection: La Greca Material: Nylo...
VERSACE La Greca 90's logo black nylon backpack bag
By Donatella Versace, Versace
Located in Hong Kong, NT
VERSACE La Greca 90's logo black nylon backpack bag Reference: TGAS/C00580 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collection: La Greca Material: Nylo...
VERSACE La Greca 90's logo black nylon backpack bag
By Donatella Versace, Versace
Located in Hong Kong, NT
VERSACE La Greca 90's logo black nylon backpack bag Reference: TGAS/C00346 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collection: La Greca Material: Nylo...
VERSACE La Greca 90's logo black nylon backpack bag
By Donatella Versace, Versace
Located in Hong Kong, NT
VERSACE La Greca 90's logo black nylon backpack bag Reference: TGAS/C00346 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collection: La Greca Material: Nylo...
VERSACE La Greca 90's logo black nylon backpack bag
By Donatella Versace, Versace
Located in Hong Kong, NT
VERSACE La Greca 90's logo black nylon backpack bag Reference: TGAS/C00521 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collection: La Greca Material: Nylo...
VERSACE La Medusa black quilted greca leather zip clutch bag
By Donatella Versace, Versace
Located in Hong Kong, NT
VERSACE La Medusa black quilted greca leather zip clutch bag Reference: PRCG/A00079 Brand: Versace Designer: Donatella Versace Model: La Medusa Material: Leather Color: Black Pattern...
new VERSACE La Greca 90's logo black nylon backpack bag
By Versace
Located in Hong Kong, NT
new VERSACE La Greca 90's logo black nylon backpack bag Reference: TGAS/C00579 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collection: La Greca Mate...
new VERSACE La Greca 90's logo black nylon backpack bag
By Versace
Located in Hong Kong, NT
new VERSACE La Greca 90's logo black nylon backpack bag Reference: TGAS/C00345 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collection: La Greca Mater...
new VERSACE La Greca 90's logo black nylon backpack bag
By Versace
Located in Hong Kong, NT
new VERSACE La Greca 90's logo black nylon backpack bag Reference: TGAS/C00577 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collection: La Greca Mate...
new VERSACE La Greca 90's logo black nylon backpack bag
By Versace
Located in Hong Kong, NT
new VERSACE La Greca 90's logo black nylon backpack bag Reference: TGAS/C00347 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collection: La Greca Mate...
new VERSACE La Greca 90's logo black nylon backpack bag
By Versace
Located in Hong Kong, NT
new VERSACE La Greca 90's logo black nylon backpack bag Reference: TGAS/C00584 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collection: La Greca Material: ...
VERSACE La Greca Greek Key black 90's logo backpack bag
By Versace
Located in Hong Kong, NT
VERSACE La Greca Greek Key black 90's logo backpack bag Reference: TGAS/C00866 Brand: Versace Designer: Donatella Versace Model: DFZ8582S DNYJS D41P Material: Nylon Color: Black Patt...
new VERSACE La Greca 90's logo black nylon backpack bag
By Versace, Donatella Versace
Located in Hong Kong, NT
new VERSACE La Greca 90's logo black nylon backpack bag Reference: TGAS/C00344 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collection: La Greca Material: ...
VERSACE La Greca Greek Key black 90's logo backpack bag
By Versace, Donatella Versace
Located in Hong Kong, NT
VERSACE La Greca Greek Key black 90's logo backpack bag Reference: TGAS/C00864 Brand: Versace Designer: Donatella Versace Model: DFZ8582S DNYJS D41P Material: Nylon Color: Black Patt...
VERSACE La Greca Greek Key black 90's logo backpack bag
By Versace, Donatella Versace
Located in Hong Kong, NT
VERSACE La Greca Greek Key black 90's logo backpack bag Reference: TGAS/C00864 Brand: Versace Designer: Donatella Versace Model: DFZ8582S DNYJS D41P Material: Nylon Color: Black Patt...
VERSACE La Greca Greek Key black 90's logo backpack bag
By Versace, Donatella Versace
Located in Hong Kong, NT
VERSACE La Greca Greek Key black 90's logo backpack bag Reference: TGAS/C00865 Brand: Versace Designer: Donatella Versace Model: DFZ8582S DNYJS D41P Material: Nylon Color: Black Patt...
VERSACE La Greca Greek Key black 90's logo backpack bag
By Versace, Donatella Versace
Located in Hong Kong, NT
VERSACE La Greca Greek Key black 90's logo backpack bag Reference: TGAS/C00867 Brand: Versace Designer: Donatella Versace Model: DFZ8582S DNYJS D41P Material: Nylon Color: Black Patt...
VERSACE La Greca Vintage 90s Logo print black nylon crossbody bag
By Versace, Donatella Versace
Located in Hong Kong, NT
VERSACE La Greca Vintage 90s Logo print black nylon crossbody bag Reference: TGAS/C00608 Brand: Versace Designer: Donatella Versace Model: 1002892 1A02180 2B77E Collection: 90's Vint...
VERSACE La Greca Vintage 90s Logo print black nylon crossbody bag
By Donatella Versace, Versace
Located in Hong Kong, NT
VERSACE La Greca Vintage 90s Logo print black nylon crossbody bag Reference: TGAS/C00784 Brand: Versace Designer: Donatella Versace Model: 1002892 1A02180 2B77E Collection: 90's Vint...
Sold
H 4.34 in W 6.7 in D 2.76 in
new VERSACE Medusa Smiley Graffiti La Greca pink leather crossbody camera bag
By Versace
Located in Hong Kong, NT
new VERSACE Medusa Smiley Graffiti La Greca pink leather crossbody camera bag Brand: Versace Collection: Medusa Smiley Extra Detail: La Greca geometric print glossy canvas with Medu...
new VERSACE La Greca Vintage 90s Logo print black nylon crossbody bag
By Donatella Versace, Versace
Located in Hong Kong, NT
new VERSACE La Greca Vintage 90s Logo print black nylon crossbody bag Reference: TGAS/C00602 Brand: Versace Designer: Donatella Versace Model: 1002892 1A02180 2B77E Collection: 90's ...
new VERSACE La Greca Greek Key black 90's logo backpack bag
By Donatella Versace, Versace
Located in Hong Kong, NT
new VERSACE La Greca Greek Key black 90's logo backpack bag Reference: TGAS/C00862 Brand: Versace Designer: Donatella Versace Model: DFZ8582S DNYJS D41P Material: Nylon Color: Black ...
new VERSACE La Greca Greek Key black 90's logo backpack bag
By Donatella Versace, Versace
Located in Hong Kong, NT
new VERSACE La Greca Greek Key black 90's logo backpack bag Reference: TGAS/C00863 Brand: Versace Designer: Donatella Versace Model: DFZ8582S DNYJS D41P Material: Nylon Color: Black ...
new VERSACE La Greca Vintage 90s Logo print black nylon crossbody bag
By Donatella Versace, Versace
Located in Hong Kong, NT
new VERSACE La Greca Vintage 90s Logo print black nylon crossbody bag Reference: TGAS/C00603 Brand: Versace Designer: Donatella Versace Model: 1002892 1A02180 2B77E Collection: 90's ...
new VERSACE La Greca Vintage 90s Logo print black nylon crossbody bag
By Donatella Versace, Versace
Located in Hong Kong, NT
new VERSACE La Greca Vintage 90s Logo print black nylon crossbody bag Reference: TGAS/C00782 Brand: Versace Designer: Donatella Versace Model: 1002892 1A02180 2B77E Collection: 90's ...
VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag
By Donatella Versace, Versace
Located in Hong Kong, NT
VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag Reference: TGAS/C00780 Brand: Versace Designer: Donatella Versace Model: 1002888 1A02180 2B77E Collection: 90's...
VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag
By Donatella Versace, Versace
Located in Hong Kong, NT
VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag Reference: TGAS/C00779 Brand: Versace Designer: Donatella Versace Model: 1002888 1A02180 2B77E Collection: 90's...
VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag
By Donatella Versace, Versace
Located in Hong Kong, NT
VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag Reference: TGAS/C00623 Brand: Versace Designer: Donatella Versace Model: 1002888 1A02180 2B77E Collection: 90's...
Sold
H 13 in W 8.27 in D 3.15 in
new VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag
By Versace
Located in Hong Kong, NT
new VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag Reference: TGAS/C00358 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collect...
Sold
H 13 in W 8.27 in D 3.15 in
new VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag
By Versace
Located in Hong Kong, NT
new VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag Reference: TGAS/C00356 Brand: Versace Designer: Donatella Versace Model: 1002888 1A02180 2B77E Materia...
Sold
H 13 in W 8.27 in D 3.15 in
new VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag
By Versace
Located in Hong Kong, NT
new VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag Reference: TGAS/C00619 Brand: Versace Designer: Donatella Versace Model: 1002888 1A02180 2B77E Materia...
new VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag
By Versace, Donatella Versace
Located in Hong Kong, NT
new VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag Reference: TGAS/C00712 Brand: Versace Designer: Donatella Versace Model: 1002888 1A02180 2B77E Collection: ...
new VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag
By Versace, Donatella Versace
Located in Hong Kong, NT
new VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag Reference: TGAS/C00778 Brand: Versace Designer: Donatella Versace Model: 1002888 1A02180 2B77E Collection: ...
new VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag
By Donatella Versace, Versace
Located in Hong Kong, NT
new VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag Reference: TGAS/C00621 Brand: Versace Designer: Donatella Versace Model: 1002888 1A02180 2B77E Collection: ...
Sold
H 16.93 in W 13 in D 7.88 in
new VERSACE La Greca 90's logo tonal print black nylon casual backpack bag
By Versace
Located in Hong Kong, NT
new VERSACE La Greca 90's logo tonal print black nylon casual backpack bag Reference: TGAS/C00793 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collect...
VERSACE La Greca 90's logo black nylon backpack bag
By Versace
Located in Hong Kong, NT
VERSACE La Greca 90's logo black nylon backpack bag Reference: TGAS/C00583 Brand: Versace Designer: Donatella Versace Model: 1002886 1A02180 2B77E Collection: La Greca Material: Nylo...
Sold
H 8.27 in W 7.09 in D 1.97 in
new VERSACE La Greca Vintage 90s Logo print black nylon crossbody bag
By Versace
Located in Hong Kong, NT
new VERSACE La Greca Vintage 90s Logo print black nylon crossbody bag Reference: TGAS/C00351 Brand: Versace Designer: Donatella Versace Model: 1002892 1A02180 2B77E Material: Ny...
VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag
By Versace
Located in Hong Kong, NT
VERSACE La Greca Vintage 90s Logo black nylon small sling backpack bag Reference: TGAS/C00622 Brand: Versace Designer: Donatella Versace Model: 1002888 1A02180 2B77E Collection: 90's...
Sold
H 8.27 in W 7.09 in D 1.97 in
new VERSACE 1990's Logo La Greca Logo print black nylon crossbody messenger bag
By Versace
Located in Hong Kong, NT
new VERSACE 1990's Logo La Greca Logo print black nylon crossbody messenger bag Reference: TGAS/C00354 Brand: Versace Designer: Donatella Versace Model: 1002892 1A02180 2B77E Ma...
$285Sale Price|40% Off
CHRISTIAN DIOR signed vintage gold pearl designer runway clip on earrings
By Christian Dior
Located in Palos Hills, IL
DETAILS • signed CHRISTIAN DIOR • gold tone with faux pearls • vintage designer earrings MEASUREMENTS • CONDITION • very good vintage condition with minimal signs of w...
$1,036Sale Price|20% Off
Size: 10
1990s Bob Mackie Size 10 Black Crepe Sexy 90s Vintage High Slit Evening Gown
By Bob Mackie
Located in San Diego, CA
Sexy, yet sophisticated 1990s BOB MACKIE black crepe bodycon evening dress! Features an elegant sweetheart neckline, with satin trim. Figure flattering silhouette that hugs the body ...
$560Sale Price / item|40% Off
W 0.62 in L 0.44 in
Pear emerald earrings studs. Emerald and diamonds earrings.
By Daizy Jewellery
Located in Istanbul, TR
Earrings with pear natural emeralds and diamonds. May birthstone. Contemporary design earrings. Metal: silver 925, plus gold plating over Total weight: 3 g. Size: 15.5 x 11 mm. Cen...
Diamond, Emerald, 14k Gold
$297Sale Price|40% Off
New Fendi Tortoise with FF Sides Sunglasses With Case
By Fendi
Located in Conroe, TX
New Fendi Sunglasses with Case Brand New Brown Sunglasses FF Detail at Sides Lightweight Scratch and Impact Resistant Made in Italy 100% UVA/UVB Protection With Case & Cleaning Clo...
Versace Silk Halter Dress with Embroidery
By Donatella Versace, Versace
Located in Water Mill, NY
A fabulous fine stretch silk halter dress from Versace with a colorful pink lily print on a turquoise background. The halter neck and bust area are comprised of intricate silk cord f...
$705Sale Price|25% Off
H 8 in W 8 in L 17 in
1990s Vintage GUCCI Calfskin Leather Boston Shoulder Bag Black Unisex
By Gucci
Located in Bangkok, TH
This vintage GUCCI boston bag is crafted of soft smooth calfskin leather in black featuring gold toned hardware and rolled leather handles. Top zipper closure opens to a luxurious nu...
Vintage LOEWE Anagram Leather Boston Bag 35 Camel
By Loewe
Located in Bangkok, TH
This vintage LOEWE Anagram boston bag is crafted of large-grained calfskin leather in camel trimmed with smooth calfskin leather in brown featuring gold toned hardware and rolled lea...
Goyard Aligre Bag Limited Edition Rafia and Coral Coated Canvas
By Goyard
Located in Miami, FL
Mightychic offers a Goyard 2024 Limited Edition Aligre bag is reissued for 2024 in Coral. The Aligre bag, made with hand braided raffia mesh and a Goyardine canvas flap with snap clo...
$1,595
H 4.75 in W 3.25 in
Vintage Chanel 2000s Black Patent Leather CC Logo Quilted Wristlet Micro Clutch
By Chanel
Located in San Francisco, CA
Vintage Chanel black patent leather mini wristlet purse from 2003/2004. Bag has square quilting throughout with CC logos, large CC logo at top. Dangling large gunmetal silver metal C...
Pale pink satin deshabillé with lace on the sleeve edge
Located in Saint-Ouen-Sur-Seine, FR
Pale pink satin deshabillé with lace on the sleeve edge and belt. Snap closure on the middle front + one ribbon inside SIZE L
Versace Fall 2021 Starfish Print Sleeveless Midi Dress Yellow IT 42
By Versace
Located in PUTNEY, NSW
Sleeveless garment-pleated satin mid-length dress in yellow featuring graphic pattern printed in multicolor. Hardware at spaghetti shoulder straps. Scoop neck collar. Lettuce edge in...
$492Sale Price|45% Off
Versace Heritage Legging in Dark Orchid & Sun Baroque Print SZ 38
By Versace
Located in PUTNEY, NSW
Versace Medusa Renaissance print leggings A colourful take on Versace's signature Greek-inspired motif, the Medusa Renaissance is present throughout the house's SS22 collection, as s...
TIFFANY & Co. Etoile Platinum Diamond 4mm Band Ring 5.5
By Tiffany & Co.
Located in Los Angeles, CA
TIFFANY & Co. Etoile Platinum Diamond 4mm Band Ring 5.5 Metal: Platinum Size: 5.5 Band Width: 4mm Weight: 7.0 grams Diamond: 10 round brilliant diamonds, carat total weight ....
Diamond, Platinum
$2,280Sale Price|20% Off
New With Tags Salvatore Ferragamo Gancini Leather Monogram Duffle Bag $2850
By Salvatore Ferragamo
Located in Conroe, TX
Salvatore Ferragamo Brand New With Tags $2850 Charcoal and black leather and acetate Salvatore Ferragamo Gancini Duffle Bag Zips across the top from both sides Dual Flat Logo Handles...
Versace Vintage Runway Bondage Gown Plunging Neckline Thigh High Slit WOW!
By Versace, Alexander McQueen
Located in Los Angeles, CA
Early 2000 Versace cut-out halter gown fashioned in rich deep black silk. Boasts thigh high slit and plunging neckline. Trimmed with square faceted silvertone grommets. Bias cut w...
$1,821Sale Price|20% Off
Chanel 1999 Sac 2.55 Ecru Wool Jersey Dark Silver Shoulder Bag
By Karl Lagerfeld, Chanel
Located in PARIS, FR
Chanel bag model 2.55 format 24 in ecru wool jersey with horizontal quilting, 2.55 clasp with logo and shoulder strap (carried on the shoulder and crossbody) in aged silver metal cha...
Subversive, maximalist and unabashedly seductive, Gianni Versace’s (1946–97) designs infused high fashion with an entirely new ethos. “I don’t believe in good taste,” the legendary Italian couturier once explained. Instead, he had a sexy good time with fashion — as he did with life. Today, vintage Versace clothing, handbags and other accessories look astonishingly fresh and freshly relevant.
More than any designer before him, Versace mined celebrity, music and Pop art for inspiration. In fact, the New York Times noted in 1997 that the fashion industry “is now driven by contemporary culture because Mr. Versace made it that way.”
Insiders consider his 1991/1992 Autumn/Winter runway show — which featured supermodels Christy Turlington, Cindy Crawford, Naomi Campbell and Linda Evangelista lip-synching George Michael’s “Freedom! '90” — the moment when the two worlds of fashion and pop culture became one, changing both forever.
Versace was born in Reggio di Calabria, Italy. His mother was a successful dressmaker who employed more than 40 seamstresses. As a child, little Gianni marveled at her workshop, which would become a university of sorts, where he learned the exceptional construction techniques that were at the foundation of his creative expression.
In 1972, at age 25, Versace moved to Milan to work in fashion. He launched his first collection — and his label — in 1978, with his older brother Santo managing the business concerns. Soon, sister Donatella, whom Gianni dressed and took to discos when she was still a child, joined the family venture, where she had a creative role and managed enormously popular ready-to-wear lines such as Versus.
Vintage Versace — and Gianni Versace Couture, which debuted in 1989 — has become catnip for modern fashion enthusiasts who seek out the now-iconic house codes that originated in the designs of the 1980s and 1990s. His glamorous and seductive apparel — the clingy skirts and slender, strappy party dresses, as well as the erotic magazine ads that publicized them — looms large, but Versace’s art and historical influences were also vast.
Versace was an art collector, and he took on commissions to create costumes for theatrical performances during the 1980s and spoke of looking to numerous cultures for inspiration. This adventurous spirit of design resulted in his creating jewel-toned prints rooted in Grecian motifs, Etruscan symbols, the Italian Baroque and Andy Warholʼs Marilyn Monroe. There were slinky dresses in Oroton, his patented chain-mail textile that draped like satin, and leather bondage ensembles. Sex sold, for both women and men. Wrote the late curator Richard Martin, “[Versace] became the standard-bearer of gay men’s fashion because he eschewed decorum and designed for desire.”
Following Versace’s tragic murder in 1997, Donatella took over the role of artistic director and continued to evolve the house codes with a twist of her feminine and feminist perspective. Today, Santo Versace is chief executive officer of Versace and Donatella is its chief creative officer.
Browse an extraordinary collection of vintage Versace evening dresses, handbags, day dresses, accessories and more on 1stDibs.
Vintage and designer backpacks do more than carry our books, notebooks, electronic devices and other possessions to and fro. They are also a reflection of personal taste and style. Whether it’s an understated solid color — black backpacks will remain forever timeless — or it’s emblazoned with a dazzling graphic pattern or an iconic fashion house’s logo, a backpack makes a statement.
In 1908, decades before the JanSports and Eastpaks of the world materialized, Norwegian Ole Bergan crafted the first backpack, whittling and shaping a juniper branch to support a robust canvas rucksack on his back. Twenty-five years later, the patent on Bergan’s wildly convenient and functional accessory expired, and backpacks became popular with hikers, campers and other outdoor enthusiasts as other designers and companies scrambled to develop their own iterations. During the late 1930s, the first zippered backpack appeared — for students, it was a significant improvement over carrying their books with a leather belt.
Some designer backpacks are sleek and sporty, while others attract attention with flashy brass hardware and a textured exterior flap. While the innumerable handbag lovers of our modern times continue to gravitate toward iconic labels — classic bags still rule — today’s shoppers are savvier and have a wider range of shopping options. Backpacks designed by universally renowned brands such as Gucci, Dior and Burberry are similarly alluring when it comes to finding the perfect carryall.
Heavy-duty nylon backpacks or those made with polyester are likely the most common, but many alternatives can be found in canvas, leather and suede. The best backpack for you might be one that is modest in size and discreet, and thus ideal for carrying a few items. If that sounds like what you need, explore crossbody bags and messenger bags, as they’re a bit easier to access and you don’t have to remove the bag to get to its contents. Others may seek a bag that is spacious enough to fit all of the supplies for an overnight hike, in which case, a sturdy, structured backpack might be a better fit.
Whether it is for fashion, function or both, there is a backpack suited to every individual. Find yours in the extensive collection of vintage and designer backpacks on 1stDibs.