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.
Ashley Fuller Olsen (born June 13, 1986) is an American fashion designer, producer, author, businesswoman, and former actress.
 She co-founded luxury fashion brands The Row, Elizabeth and James, and the more affordable lines Olsenboye and StyleMint with her fraternal twin sister Mary-Kate Olsen.
 She is the older sister of actress Elizabeth Olsen.
Margalit Ruth "Maggie" Gyllenhaal ( ; born November 16, 1977 in New York City) is an American actress.
 Part of the Gyllenhaal family, she is the daughter of filmmakers Stephen Gyllenhaal and Naomi Achs, and the older sister of actor Jake Gyllenhaal.
Givenchy (] ) is a French luxury fashion and perfume house.
 It hosts the brand of haute couture clothing, accessories and Parfums Givenchy, perfumes and cosmetics.
 The house of Givenchy was founded in 1952 by designer Hubert de Givenchy and is a member of Chambre Syndicale de la Haute Couture et du Pret-a-Porter.
 It is owned by luxury conglomerate LVMH.
 Its current artistic director is Clare Waight Keller.
Mary-Kate Olsen (born June 13, 1986) is an American fashion designer, producer, author, businesswoman, equestrian, and former actress.
 She co-founded luxury fashion brands The Row, Elizabeth and James, and the more affordable lines Olsenboye and StyleMint alongside her fraternal twin sister Ashley Olsen.
 Olsen pursued acting independently as an adult until 2012.
 She is an older sister of actress Elizabeth Olsen.
Léo Marciano Paris is a French luxury fashion house founded in 1970 by the eponymous designer Léo Marciano.
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.
Burberry Group plc, is a British luxury fashion house headquartered in London, England.
 Its main fashion house focuses on and distributes trench coats, ready-to-wear outerwear, fashion accessories, fragrances, sunglasses, and cosmetics.
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.
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.

Question: What French luxury fashion house has been worn by the American actress who is the older sister of actor Jake Gyllenhaal?
Answer: Chloé