Mary Kate Olsen Ashley Olsen Broadway Music Box Theatre Easter

Famous sisters unite!

The Olsen twins are rarely spotted out and about these days, but last night the successful sisters went to the Easter night opening of Lend Me a Tenor at the Music Box Theatre in NYC, starring Ashley's beau Justin Bartha. Way to show your support!

But which sis looked better in their sunglasses? And can you even tell 'em apart?