While David Foster and Katharine McPhee are enjoying their May/December relationship right now, don't expect wedding bells in the near future.. A source tells E! Katharine McPhee and her husband David Foster are, reportedly, trying to take advantage of the coronavirus pandemic to have their first baby. The Grammy Award winner and his wife, Katharine Victoria’s David Foster is letting online audiences into his home on a daily basis during the COVID-19 outbreak — albeit safely, via Instagram. They're engaged! Congrats are in order for Katharine McPhee and David Foster. Katharine McPhee and David Foster have been entertaining their fans with daily concerts through Instagram Live during the coronavirus outbreak, and Wednesday's live stream featured a haircut. Singer/actress Katharine McPhee has taken on the role of hairstylist for husband David Foster after giving the veteran musician a trim during an Instagram Live session. The couple is, allegedly, trying to start their family while practicing self-isolation at their home.