When asked about who they would choose for their perfect party guests, Frank Sinatra and Elvis (who would "get the party started," they imagine) make the cut. Hey, you can't beat the classics.
As these things go, this little One Direction interview is worth multiple viewings just to pick up on all the kooky things they do. Oh, and eagle eyed fans spotted Harry tapping Niall on the shoulder (0:29) to say "and Selena." Do with that what you will.
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Gallery | Celebs Who Crush on One Direction