THEY TOOK BRITNEY'S ADVISE AND GOT NAKED!!

To celebrate their last North American performance in Montreal, Britney's male dancers took the ringleader's advice and.... got naked! As a prank, they stripped down into pink briefs for 'Boys' and 'If U Seek Amy.' Their briefs even say "True Brit" on the waistband!

Check out the sexy and hilarious gallery from Tuesday's show in Montreal after the jump.