Numerous sources for US Weekly, confirm that singer Katharine McPhee is pregnant.
McPhee, 36, and David Foster, 70, began their romance in 2017 and appeared in public a year later at the Met Gala.
David has five daughters from his previous relationship, including his eldest daughter, Allison Jones Foster, who was born when he was 20 but was given up for adoption. Afterwards, they reunited and re-created their relationship, later, when she was an adult.
The producer welcomed his second daughter, Amy S. Foster, now 44, to his first wife, singer BJ Cook, with whom he was married from 1972 to 1981.
He has Sarah, 37, Erin, 35, and Jordan, 32, with his second wife, Rebecca Dyer, whom he married from 1982 to 1986.
Foster has no children with his third wife, Linda Thompson, whom he married from 1991 to 2005, nor with his fourth wife, Yolanda Hadid, whom he divorced in May 2017.
One of David's daughters, Sarah, says she and her siblings are supportive of their father's relationship with McPhee.
"We approve of anyone who is kind to my father. At the end of the day, we are really honest about that. If there was something wrong, we would not go out and talk so openly. "We just want someone to treat her well and I think she really does."
Katharine McPhee, meanwhile, was previously married to David Cokas, from 2008 to 2016. This will be her first child.