Katharine McPhee (aka Katharine McPhee-Foster) is an American pop singer, songwriter, and actress who has a net worth of $14 million dollars. McPhee became a household name after appearing on "American Idol" in 2006. Since coming in second place on the show, Katharine has released five studio albums (including a Christmas album), and her 2007 debut album reached #2 on the "Billboard" 200 chart.