Photos:: 2014 Metropolitan Museum of Art Costume Institute Benefit

Vogue editor Anna Wintour in Chanel Couture dress.  (Evan Agostini / Invision/Associated Press; Justin Lane / EPA)

Actress Jessica Alba in a lace dress by Diane Von Furstenberg.  (Evan Agostini / Invision/Associated Press)

David Beckham, left, is wearing Ralph Lauren with wife Victoria Beckham in a dress from her namesake collection.  (Charles Sykes / Invision/Associated Press)

Actress Marion Cotillard, wearing Dior.  (Justin Lane / EPA; Evan Agostini / Invision/Associated Press)

Actress Lena Dunham wearing a dress by Giambattista Valli.  (Justin Lane / EPA; Evan Agostini / Invision/Associated Press)

Singer Taylor Swift in an Oscar de la Renta gown.  (Charles Sykes / Invision/Associated Press)

Actress Lupita Nyong’o in a custom Prada dress with glass bead and feather embellishments.  ( Evan Agostini / Invision/Associated Press; Larry Busacca / Getty Images )

Actress Sarah Jessica Parker in a gown by Oscar de la Renta.  (Charles Sykes / Invision/Associated Press)

Actress Kirsten Dunst, wearing a Star Wars-themed dress from Rodarte.  (Evan Agostini / Invision/Associated Press)

Actor Andrew Garfield, wearing Band of Outsiders.  (Evan Agostini / Invision/Associated Press; Justin Lane / EPA)

Actors Blake Lively and Ryan Reynolds. Lively is wearing a dress from Gucci.  (Charles Sykes / Invision/Associated Press)

Kim Kardashian and Kanye West, both dressed in Lanvin.  (Justin Lane / EPA)

Actress Zoe Saldana wearing a dress by Michael Kors with black cashmere halter bodysuit and sculpted skirt.  (Justin Lane / EPA; Charles Sykes / Invision/Associated Press)

Actress Michelle Williams in a Louis Vuitton dress.  (Justin Lane / EPA; Evan Agostini / Invision/Associated Press)

Actor Hugh Jackman and wife Deborra-Lee Furness.  (Justin Lane / EPA)

Actress Hailee Steinfeld is wearing a dress by Prabal Gurung.  (Evan Agostini / Invision/Associated Press; Charles Sykes / Invision/Associated Press)

Actors Sean Penn and Charlize Theron. Theron is wearing a dress by Dior.  (Justin Lane / EPA)

Actress Anne Hathaway in a dress from Calvin Klein.  (Justin Lane / EPA)

Actress Kristen Stewart, wearing a dress by Chanel.  (Evan Agostini / Invision/Associated Press; Justin Lane / EPA)

Actress Lea Michelle, wearing Altuzarra.  (Evan Agostini / Invision/Associated Press; Justin Lane / EPA)

Model Gisele Bundchen wears a dress by Balenciaga with husband Tom Brady.  (Charles Sykes / Invision/Associated Press)

Actress Monica Bellucci.  (Justin Lane / EPA)

Actress Rachel McAdams in a pale pink Ralph Lauren evening dress.  (Justin Lane / EPA)

Nicole Ritchie, wearing a dress by Donna Karan.  (Evan Agostini / Invision/Associated Press)

Actor Neil Patrick Harris and David Burtka.  (Evan Agostini / Invision/Associated Press)

Cara Delevingne, from left, Stella McCartney, Kate Bosworth and Reese Witherspoon.  (Charles Sykes / Invision/Associated Press)

British model and actress Suki Waterhouse in a pink dress by Burberry with a Roger Vivier clutch.  (Evan Agostini / Invision/Associated Press; Charles Sykes / Invision/Associated Press)

Actress Emmy Rossum wearing a Carolina Herrera dress.  (Justin Lane / EPA)

Designer Riccardo Tisci and Naomi Campbell. Campbell is wearing a Givenchy dress.  (Evan Agostini / Invision/Associated Press)