Selena Gomez

Aside from being a 2012 Cosmo cover star, Selena Gomez is an actor-singer-beauty mogul powerhouse. She landed her first on-screen role at age 10 on Barney & Friends. She rose to fame on Disney's Wizards of Waverly Place, later putting out four solo albums and founding a beauty empire with Rare Beauty, a company that's valued at over $2 billion.