Sister Style Showdown: Rooney Mara vs. Kate Mara (POLL)
Style seems to run in the family, as Rooney's stylish big sister, Kate Mara, 28, also dazzled at the premiere. Kate showed her support in a cleavage-baring coral Christian Dior dress, paired with a gold clutch and pumps.
While it was Rooney's night to shine at the premiere, which sister do you think looked best on the carpet? Vote in the poll and sound off in the comments.