Kate and Rooney Mara are both headed to the Oscars this month.
Rooney, 26, is nominated for Best Actress for her role in The Girl With the Dragon Tattoo. Big sister Kate, 28, is also attending and said the night will be something of "a family affair."
So what will the stylish siblings be wearing?
"You'll have to wait and see!" Kate told E! News Tuesday at Badgley Mischka's show during New York Fashion Week.
Mara and Kate might look like they have totally different styles, but Kate told us they "have very similar tastes."
"Usually anything she would wear, I would also wear, and generally speaking vice versa," she said. "My style is constantly changing depending on what role I'm playing at that time. Probably the same goes for her as well."
Does this mean Mara and Kate are raiding each other's closets? "Yeah, absolutely," she laughed. "It's really fun."
One thing's for sure, if either of the Mara sisters want a Badgley Mischka hookup, they've already got the connection. "My cousin works with the guys," Kate said, adding, "I've heard so many wonderful things about them!"