In November 2005, 24-year-old Jennifer was cast as Effie White in "Dreamgirls." The only hitch? She had to gain 20 pounds in two weeks for the role. "I went up two sizes by eating all the cookies, cakes and pies I could," she said of her weight gain. "Jennifer doesn't eat like that. But Effie does. I felt like a whole other person for six months of filming."