What's the Big Frigin' Difference?!

Don't let these two pictures fool you -- there are some super-stealthy differences between them. Are you good enough to spot 'em?**HINT -- there are three differences in the above photographs!**

Source: http://www.tmz.com/2012/03/03/whats-the-big-frigin-difference-photoshop-celebrity-hunt-tmz-games-all-mixed-up-guess-who/

Drea de Matteo Drew Barrymore Ehrinn Cummings Elena Lyons Elisabeth Röhm Elisha Cuthbert Eliza Dushku Emilie de Ravin