Getty Images1/12Jennifer Lawrence in Stella McCartney
Richard Harbaugh / ©A.M.P.A.S2/12Lady Gaga in Christian Siriano and The Weeknd
Getty Images3/12Saoirse Ronan in Laura Basci
Todd Wawrychuk / ©A.M.P.A.S.4/12Leonardo DiCaprio and Sylvester Stallone
Getty Images5/12Alicia Vikander in Louis Vuitton
Harbaugh / ©A.M.P.A.S.6/12Rachel McAdams in Prada
Phil McCarten / ©A.M.P.A.S7/12Cheryl Boone Isaacs and Steven Spielberg
Todd Wawrychuk / ©A.M.P.A.S.8/12The table setting at lunch
Todd Wawrychuk / ©A.M.P.A.S.9/12Rooney Mara in Giambattista Valli Haute Couture and Jacqueline West
Todd Wawrychuk / ©A.M.P.A.S.10/12Mark Ruffalo and Tom McCarthy
Phil McCarten / ©A.M.P.A.S.11/12Charlotte Rampling (left) and Matt Damon (center)
Todd Wawrychuk / ©A.M.P.A.S.12/12Brie Larson in Emilia Wickstead and Deniz Gamze Ergüven