Katharine McPhee has "annoyed" her husband, The "American Idol" alum recently welcomed a son with famed songwriter David Foster, and on Wednesday, she revealed on the "Today" show that they had chosen to name him Rennie. Her the interview with Hoda Kotb and Jenna Bush Hager, McPhee, 36, joked that Foster "probably will kill [her] for saying" the name publicly.