Who knew Hugh Jackman was such a Katy perry fan?! Watch his 'Teenage Dream' lip sync

His days of singing in Les Miserables are over -- but that doesn't mean Hugh Jackman can't get down to a summertime hit!

Jackman is truly living his Teenage Dream while lip syncing to this Katy Perry classic for the 'Gram, and we're getting hype just watching him!

Not only is his lip syncing on point, but his facial expressions have us ROLLING.

Um, did you see that eyebrow move?

Never change, Hugh. Never change...