Hollywood's hottest celebrities and power couples lit up the red carpet at the Metropolitan Museum of Art Costume Institute annual gala in New York on Monday.
Almost everyone this year looked flawless, most notably Emma Stone, Marion Cotillard and Blake Lively, who stole the limelight from others in their fabulous gowns and dresses.
However, there were some stars who failed to impress. Oscar winner and People Magazine's Most Beautiful Person Lupita Nyong'o, who always looks ravishing, tripped up in her outrageous green Prada outfit. Katie Holmes, Maggie Gyllenhaal and Kristen Stewart were also among the biggest disappointments of the night.
This year the Metropolitan Museum of Art Costume Institute is celebrating the work of designer Charles James.
James, who was born in London, studied in Paris and eventually settled in New York, is known as an inventor in the fashion world.
The exhibition will be housed in the new Anna Wintour Costume Center.
Jay Z and Beyonce Knowles:
David and Victoria Beckham:
Blake Lively and her husband, actor Ryan Reynolds: