It’s well known Justin Bieber’s mom Pattie Mallette is his biggest fan, but is she slated to join the show as one of his dancers? At Jingle Ball on Monday night in Los Angeles, our spy was lucky enough to be backstage while Justin rocked the crowd.

While Justin went through his routines, Pattie pantomimed every single one of his dance moves. When asked how she knew his steps so well the ultimate stage mom confessed she attends nearly every rehearsal and just picked them up along the way. We guess we know which side of the family the Biebs gets his moves from.