Katharine McPhee participated in “The Tonight Show with Conan O’Brien” in order to raise her popularity. Katharine looked lovely when she was singing tracks from her new album called Unbroken. Her appearance was great as she was in a cleavage-baring black top with black stretch pants and black heels. Despite the fact that Katharine has a lot of fans, the critics were not satisfied with her latest effort. Just look what has been written: she can sing but Katharine needs a kind of material that will distinguish the singer from others. She presented forgettable collection of songs that lack distinct personality. Click more to see the full gallery of Katharine McPhee’s cleavy pictures.