Léo Marciano Paris is a French luxury fashion house founded in 1970 by the eponymous designer Léo Marciano.
Maison Margiela, formerly "Maison Martin Margiela", is a French luxury fashion house headquartered in Paris and founded in 1988 by Belgian designer Martin Margiela.
 The house produces both haute couture-inspired artisanal collections and ready-to-wear collections, with the former influencing the designs of the latter.
 Product lines include womenswear, menswear, fine jewelry, footwear, objects, fragrance, and home goods, among others.
 Known for deconstructive and avant-garde designs with unconventional materials, Maison Margiela has traditionally held live shows in unusual settings, for example empty metro stations and street corners.
 Models' faces are often obscured by fabric or long hair to direct attention to the clothes and design.
 With Maison Martin Margiela going public in 2002, Margiela resigned as creative designer in 2009 and John Galliano was appointed to the role in 2014.
 The company has collaborated on displays and designs with Barneys New York, Converse, G-Shock Opening Ceremony, Hermès, H&M, L’Oreal, and Swarovski.
Hedi Slimane (] ; born July 5, 1968) is a French photographer and fashion designer.
 From 2000 to 2007, he held the position of creative director for Dior Homme (the menswear line of Christian Dior).
 From 2012 to 2016, he was the creative director for Yves Saint Laurent.
 He left the brand on March 31, 2016.
Dior Homme is the menswear division of Christian Dior SA, the French clothing retailer.
 Dior Homme has been under the creative direction of Kris Van Assche since spring/summer 2008.
 It had been directed by Hedi Slimane since the fall/winter 2001-02 season.
 Under Hedi Slimane's direction, Dior Homme has introduced a characteristic slim silhouette which has since taken off within the fashion industry.
 The early collections delved into the exploration of the male sex.
 The look darkened during the Luster period which was inspired by the electroscene of Berlin.
 Since 2004 A/W, Dior Homme has delved into exploring the different styles of Rock and roll.
 A popular rumor is that Karl Lagerfeld lost about 90 pounds so he would fit into one of Slimanes esteemed suits.
 The logo used now by Dior Homme is a bee, usually in the bottom right-hand side of knit wear and the top right side in polo shirts.
Chloé (] ) is a French luxury fashion house founded in 1952 by Gaby Aghion.
 Aghion later joined forces with Jacques Lenoir in 1953, formally managing the business side of the brand, allowing Aghion to purely pursue the creative growth of Chloé.
 Its headquarters are located in Paris, France.
 The house is owned by luxury brands holding company Richemont Group.
 Chloé has been worn by many celebrities, including Marion Cotillard, Sienna Miller, Madonna, January Jones, Maggie Gyllenhaal, Cameron Diaz, Emma Stone, Clémence Poésy and Katie Holmes.
Grace Hartzel (b. (1995--) 11, 1995 (age 22 ) ) is a 5 ft tall fashion model from the U.S. state of Indiana.
 She was discovered at age 15 while dining at a St. Louis Cheesecake Factory with her family.
 She "walked in nearly every major show during the fall/winter 2015 and spring/summer 2016 shows" after being noted as a muse of then-YSL fashion designer Hedi Slimane in the fall/winter 2014 show.
 Slimane's spring 2014 show was "'entirely made' in Hartzel's image" when she was an unknown.
English designer Sarah Burton, creative director of the luxury fashion house Alexander McQueen, designed the bridal gown worn by Catherine, Duchess of Cambridge (née Middleton), at her wedding to Prince William, Duke of Cambridge, on 29 April 2011.
Yves Saint Laurent YSL (] ; also known as Saint Laurent Paris) is a French luxury fashion house founded by Yves Saint Laurent and his partner, Pierre Bergé.
 Saint Laurent Paris revived its haute couture collection in 2015 under creative director Hedi Slimane.
 The new collection, "Yves Saint Laurent Couture" or "Saint Laurent Paris 24, Rue de L’Université" is the French house's first couture collection ever since the retirement of its legendary founder in 2002.
Acne Studios is a multidisciplinary luxury fashion house based in Stockholm, Sweden.
 Founded in 1996 as part of the creative collective ACNE, an acronym for Ambitions to Create Novel Expressions, the fashion house specializes in men's and women's ready-to-wear fashion, footwear, accessories and denim.
 Founder and Creative Director Jonny Johannson's interest in photography, art, architecture and contemporary culture has helped Acne Studios to become a respected creator of clothing, publications, furniture, exhibitions and special collaborations.
Kevin Francis Gray (born 1972) is an Irish artist living and working in London and Pietrasanta, Italy.
 Hedi Slimane is a collector of his work.

Question: Hedi Slimane was the creative director for what French luxury fashion house from 2012 to 2016?
Answer: Yves Saint Laurent