As Usual, Several Oscar Winners and Nominees Changed It Up For the Vanity Fair Party

Some people changed colors, some swapped out a long train, some freed the midriff, and then some people — one  person — changed into an almost identical version of what they were already wearing.

[Photos: Taylor Hill, Steve Granitz/FilmMagic, Rodin Eckenroth/GA/The Hollywood Reporter via Getty Images, Doug Peters/PA Images via Getty Images, Karwai Tang/WireImage, Lionel Hahn/Getty Images]