Mary-Kate Olsen Parties with Her Sister Elizabeth in N.Y.C.

FilmMagic; Bill Davila/StarTraks

03/08/2012 AT 6:00 AM ET

Elizabeth Olsen had some sisterly support at the afterparty for her new film Silent House in the Big Apple. Big sis Mary-Kate came to hang out at the Piaget-hosted bash held at the Stone Rose Lounge.

It was a young crowd inside, and the sisters spent their night at a VIP table surrounded by friends. While they never got up and danced, the ladies were enjoying the music spun by deejay Cassie Coane, who’s a close friend of the Olsens, as well as conversations with each other. – Carlos Greer


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