Katharine McPhee is an American sweetheart of sorts. She got her big break on American Idol back in 2006, ultimately finishing in 2nd place. She went on to achieve success with her music career which she has transitioned into an acting career, being one of the lead actresses on the NBC show Smash. It’s great to see talent get the appreciation it deserves, so join us as we appreciate the 20 Hottest of Katharine McPhee!