Swift puts on a show for The X Factor in London. Plus: Stephen Colbert, Liv Tyler, Ben Affleck and more

BIDDING BUDDIES

Going once, going twice, sold! Tina Fey and Amy Poehler auctioned themselves off Saturday at Comedy Central's Night of Too Many Stars: America Comes Together for Autism Programs in N.Y.C. The winning bid for the best buds? $36,000 each.