The Pivinator Becomes The Yoganator

Ever wonder how Ari Gold manages to fill out those suits on Entourage?

We're guessing Jeremy Piven's fastidious workout routine has something to do with it - even during his Hawaiian vacation, we caught the star doing his yoga stretches!

Jeremy's girlfriend, however, seemed less than impressed by his attempts at downward-facing-dog. Can't argue with the results, though!