Katharine McPhee
Katharine Hope McPhee (born March 25, 1984) is an American pop singer, songwriter, and actress. She gained fame as a contestant on the fifth season of the Fox reality show American Idol in 2006, eventually finishing as the runner-up. Since 2012, McPhee was one of the lead actors on Smash, but the show was canceled after its second season.
source: Wikipedia