Celebrity Lookbook: Alexa Chung’s Best Fashion Moments

Alexa hosts the launch of the Annual British Designers Collective in a Celine skirt.

Alexa wears a J.W. Anderson x Topshop sweater during London Fashion Week.

Alexa attends the YSL Belle D'Opium fragrance launch in high-waist leather shorts, a grey top and a cable-knit cardigan.

Alexa dons a Valentino dress at the Andam Paris Fashion Week Dinner at The French Ministry of Culture.

Alexa arrives at Pavillon Cambon to attend the Chanel show during Paris Fashion Week in a preppy collared cocktail dress with buttons and a bow tie.

Alexa looks feminine and sweet at the Chanel show during Paris Fashion Week.

Alexa gets the front row treatment during the Martine Rose show while wearing a knee-length leather skirt and V-neck top.

Alexa arrives at the Christopher Kane show during London Fashion Week in a grey pea coat accesorized with a black clutch.

Alexa wears a polka-dotted shirt and high-waist shorts at the launch of "Four Stories."

Alexa rocks a color-block ensemble at the House of Holland show during London Fashion Week.

Alexa is spotted wearing a pair of jeans and a grey cardigan in the front row for the Margaret Howell show during London Fashion Week.

Alexa wears a high-collared blouse, tailored cropped trousers and a pair of black brogues at the Mary Katrantzou show during London Fashion Week.

Alexa looks stylish as always in a cheetah print jacket and black dress at the Marc Jacobs show during New York Fashion Week.

Alexa attends the Chanel show during Paris Fashion Week in a feminine grey dress with balloon sleeves.

Alexa arrives at the Elle Fashion | Next Runway Show during New York Fashion Week in a frilly white dress, which she paired with nude pumps and an embellished clutch.

Alexa keeps it simple at the Chanel show during Paris Fashion Week in a black top and mini skirt.

Alexa poses for photos outside the Evian Suite at Wimbledon in a black dress with a cute bow detail.

Alexa wears a black dress over top a printed long-sleeve shirt in the front row during the launch of London Collections: MEN.

Alexa sports a black top hat, printed shirt and a tan trench coat at the Topman Design show in London.

Alexa wears a black and white Moschino dress to the Royal Academy Summer Exhibition in London.

At a screening of "Virginia" in New York City, Alexa hits the red carpet in a collared nude Carven lace applique shirt paired with black shorts worn over opaque tights.

Alexa looks elegant in a Mulberry dress at a dinner in honor of Frieze Project Artists in New York City.

Alexa sports a tan coat and black clutch at the Erdem show during London Fashion Week.

Alexa wears blue Proenza Schouler dress at the brand's Spring 2012 fashion show during New York Fashion Week.

Alexa experiments with feminine frills at the Topshop Unique show during London Fashion Week.

Alexa sports a simple navy dress and white shirt at the Marios Schwab show during London Fashion Week.

Alexa dons a black silk Stella McCartney gown to the designer's special presentation event during London Fashion Week.

Alexa wears a boyfriend-inspired shirt dress and tights at the Fair Trade and environmental fashion and lifestyle label's party.

At the Yves Saint Laurent show during Paris Fashion Week, Alexa sports a bold look with this black and red dress.

Alexa hosts the 2012 Elle Style Awards in a grey checked Stella McCartney suit.

Alexa attends the Jason Wu Fall 2012 fashion show during Mercedes-Benz Fashion Week at St. in New York City.

Alexa dominates the front row at the Honor Fall 2012 fashion show during New York Fashion Week in a black and blue ensemble.

Alexa sports a cropped Burberry trench over a black chiffon dress at the Burberry Paris Boutique Opening.

Alexa wears a silk blouse and studded floral applique skirt at the amfAR New York Gala to kick off Fashion Week.

Alexa wears a sparkle-bodiced Christopher Kane dress at the British Fashion Awards.

Alexa looks adorable at the Miu Miu show during Paris Fashion Week.

Alexa successfully experiments with ruffles at the Mulberry 40th Anniversary celebration in New York City.

Alexa poses backstage at the Cynthia Rowley show during New York Fashion Week in a black printed dress with cut-out detail.

Alexa dresses up a simple look with a bright purse at the launch of ACP's 30 Days of Fashion and Beauty in Australia.

In a short-sleeve black printed dress, Alexa attends a photo call to promote 30 Days of Fashion and Beauty.

Alexa wears Chanel at the label's show in Paris.

In a short-sleeve, black and white collared dress, Alexa attends a photo call to promote 30 Days of Fashion and Beauty.

Alexa dons a navy Carven dress with contrasting white collar at the Burberry Serpentine Summer Party.

In a belted, polka-dotted dress, Alexa opts for a vintage-inspired look at the book celebration for "Makeup Your Mind: Express Yourself."

Alexa channels her feminine side at the Chanel Collection Croisiere Show.

In a short black dress and tights, Alexa attends an exclusive preview party for Sony Ericsson's Xpreia PLAY.

Alexa attends the "Ceremony" New York City screening in a black dress with contrasting white collar.

Alexa sports a navy sweater and black leather pants to the Burberry Prorsum Show during London Fashion Week.

Alexa sports another feminine look in a cream-colored dress and sweater tied around her shoulders at the Christopher Kane show during London Fashion Week.

Alexa sports and over-sized stripped sweater and trench coat at the Unique Show during London Fashion Week.

Alexa dons a polka-dotted dress with a floral detail at the Etam show in Paris.

Alexa looks sophisticated in a contrasting-collar shirt paired with black tights at the 2010 Trophee Des Arts Gala in New York City.

Alexa sports a whimsical pink Chanel dress with light feather detailing at the 2010 British Fashion Awards.

Alexa dons a printed, belted dress while attending a screening of "Love & Other Drugs" in New York City.

NEW YORK - NOVEMBER 15: Alexa Chung attends the 7th Annual CFDA/Vogue Fashion Fund Awards>> at Skylight SOHO on November 15, 2010 in New York City.

Alexa wears a light blue and white checked dress to the Miu Miu show during Paris Fashion Week.

Wearing a blue dress and tan trench coat, Alexa poses for photographers as she arrives for the Chloe show during Paris Fashion Week.

Alexa DJs at the 8th annual Teen Vogue Young Hollywood Party in a white blouse and lace skirt.

Alexa dons a long-sleeved, belted grey dress at the Burberry Prorsum show during London Fashion Week.

Alexa keeps it simple in a basic dress at the Marc Jacobs Spring show during New York Fashion Week.

Alexa sports a casual look at the Alexa Chung for Madewell launch party celebration during Fashion's Night Out in New York City.

For the reopening of the Chanel SoHo Boutique, Alexa sports a black and white Chanel shift dress.

Alexa opts for a pink Valentino ensemble with white floral details at the 2010 GQ Men of the Year Awards in London.

Alexa arrives at the 2010 Royal Academy Summer Exhibition VIP private view in a monochromatic collared dress.

Alexa dazzles at the 2010 CFDA Fashion Awards in a Marc Jacobs dress with a bedazzled bow detail.

Alexa sports stylish Chanel accessories at  the Chanel show as part of the Paris Fashion Week.

In a baby blue long-sleeved Chanel dress, Alexa poses with her Editor's Choice Award at the 2010 ELLE Style Awards.

Alexa rocks an animal print jacket at the 37th International Emmy Awards gala in New York City.

Alexa attends the 37th International Emmy Awards gala in a grey one-should dress.

Alexa spices up an all-black look at a screening of "The Twilight Saga: New Moon" in New York City with an animal print purse.

Alexa keeps her look simple as she DJs at the opening of the Chanel Makeup Studio at Bloomingdale's.