Production company: Sunswept Entertainment
Notable projectsMarley & Me (2008), Percy Jackson & the Olympians: The Lightning Thief (2010), The Twilight Saga: Breaking Dawn - Part 2 (2012)

Over the last five years, Karen Rosenfelt has been busy producing two very different film franchises, Twilight and Alvin and the The Chipmunks. And when she wasn't dealing with vampires or rodents, Rosenfelt found time to produce other films like Marley & Me, Yogi Bear and The Devil Wears Prada. Since 2006, she's produced 13 films, 12 of which were highly profitable, the only exception being 2011's Jack Black/Owen Wilson stinker, The Big Year.

And it looks like Karen has some big years ahead of herself. She currently has 10 films lined up, the first being Percy Jackson: Sea of Monsters, which hits theaters this August.