What's The Big Frigin' Difference?!

Do you think you can find the three sneaky differences hidden in the photo?

Source: http://www.tmz.com/2012/10/20/whats-the-big-frigin-difference-tmz-games-photoshop/

Brittany Snow Brittny Gastineau Brody Dalle Brooke Burke Brooke Burns Busy Philipps Cameron Diaz Cameron Richardson