Renee Zellweger
Before her pout completed Tom Cruise in "Jerry Maguire," Renee Zellweger was a big-haired Lone Star State cheerleader, English major at University of Texas who only took drama because it fit into her schedule and constant co-star with fellow student Matthew McConaughey (student theater projects, "Dazed and Confused," and "Texas Chainsaw Massacre: The Next Generation"). After the Cameron Crowe rom-com, she became a household name, an ex to Jim Carrey, Bradley Cooper and White Stripes' frontman Jack White the Best Actress who won a 2001 Golden Globe for "Nurse Betty" while in the bathroom, the target of English hatred when she gained 20 pounds and faked an accent to play working-girl heroine/national treasure Bridget Jones, the target of tabloid eating disorder rumors when she lost aforementioned weight and then some in time to appear at the Oscars in honor of her first nomination, a talented singer/dancer who won a Golden Globe for playing Roxie Hart in "Chicago" (She also got another Oscar nod.) and finally an Oscar winner for her supporting role in 2003's "Cold Mountain." In 2005, after reprising Bridget in the sequel, she married country crooner Kenny Chesney four months after meeting him. In another four months, she filed annulment papers citing fraud.