My Friday was just made more Fab. A handful of gorgeous celebs came out to Chanel's Tribeca Film Festival event  last night, but these two took the biggest risks and therefore tickled my fashion fancy. Diane kept things elegant but slightly exotic in gray-silk harem pants, a black turtleneck, and a cross-body embellished Chanel purse. Meanwhile, Mary-Kate wowed in a witchy beaded black frock, Givenchy  heels, and a red croc Nancy Gonzalez  clutch. Both très Fab, but totally different. Who wins?