Mary-Kate and Ashley Olsen just signed copies of their new book, Influence, at Barnes & Noble. And look who greeted them outside — none other than PETA2 supporters in their Hairy-Kate and Trashley Halloween masks! (Incidentally, PETA2 is PETA's baby sister.) Leave it to the Olsens to make it feel like Fashion Week year-round. Our hearts and souls are warmed.