American Idol Katharine McPhee celebrates David Foster's 68th birthday amid dating rumors 11/04/2017 Katharine McPhee celebrated her rumored boyfriend David Foster's 68th birthday. Read More RELATED NEWS Katharine McPhee leaves David Foster tour after "horrible" family tragedy'American Idol' alum Kellie Pickler's husband Kyle Jacobs dead from apparent suicideKatharine McPhee gives birth to first child with David Foster TAGS: American Idol The Real Housewives Katharine McPhee David Foster
