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Look out, Jonas Brothers… If you don't know who One Direction is, ask your tween kids – they'll tell you what's what. The U.K. overnight sensations are now invading North America, and they're letting their personalities shine over a spot of tea with ET Canada. The first question: Boxers or Briefs? Watch the video for their answer…

Simon: New 'X Factor' To Be 'More Controversial'

Mentored by Simon Cowell after dazzling audiences on the U.K. version of The X Factor, One Direction -- Liam Payne (18, from Wolverhampton), Louis Tomlinson (20, from Doncaster), Niall Horan (18, from Ireland), Harry Styles (18, from Cheshire) and Zayn Malik (19, from Bradford) – are climbing up the Billboard charts (currently ay No. 11) with their new single What Makes You Beautiful from the Up All Night album.

Britney Spears Offered Millions for 'X Factor' Gig

Looks for One Direction at The Kid's Choice Awards this Saturday live on Nickelodeon!