Katharine McPhee may be younger than her stepdaughters Erin Foster and Sara Foster, but they still have a close bond.
The American Idol alum started dating David Foster in 2017, and the pair got engaged one year later. In June 2019, they tied the knot in London. News broke in October 2020 that McPhee was pregnant, and baby boy Rennie arrived in February 2021.
Throughout their relationship, David and McPhee have gotten backlash for their 35-year age gap. However, his kids are not pressed.
“Everyone has an opinion about something,” Sara said during a June 2026 appearance on K...
HALO NEWSLETTER
Join HALO today and unlock this story instantly — It's Free