Katharine McPhee / instagram
Katharine McPhee is sharing a closer look at her son with David Foster.
The actress and singer, 38, shared a series of photographs on Instagram Sunday in honor of Father’s Day.
Among the carousel of shots is one image of McPhee and Foster, 72, with their son Rennie, whose face can be partially seen looking down at a piano. The Smash alum has previously hidden her little one’s face entirely from view when sharing photos of him on social media.
In the caption of her post, McPhee paid tribute to Foster, whom she described as being the man “who loves me like I could have only dreamed of & who made me complete in life by making me a mommy.”
RELATED: Katharine McPhee and David Foster Say They’re ‘Having the Best Time’ Raising 1-Year-Old Son Rennie
“I love our little family. I love our big family,” McPhee continued. “You have NEVER complained about how your life is slightly different now. Well… you only complain that you can not stay up late watching TV in bed but how can I blame you -that’s your favorite thing.”
Added the star, “You’ve only made bringing Rennie into the world an absolute joy for me. To many more adventures baby! 🎊I love you to the moon and back.”
Never miss a story – sign up for PEOPLE’s free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.
Katherine McPhee / Instagram Katharine McPhee and son Rennie
RELATED: Katharine McPhee and Husband David Foster Enjoy Scenic Easter Outing with Son Rennie
McPhee and Foster welcomed their son in February 2021.
“Katharine McPhee and David Foster have welcomed a healthy baby boy,” a rep for the couple told PEOPLE at the time. “Mom, Dad and son are all doing wonderfully.”
Want to get the biggest stories from PEOPLE every weekday? Subscribe to our new podcastPEOPLE Every Day, to get the essential celebrity, entertainment and human interest news stories Monday through Friday.
The couple tied the knot in June 2019 after first meeting in 2006, when Foster mentored McPhee and other contestants on season 5 of American Idol.
Foster is also father to daughters Sara, Erin and Jordan, whom he shares with second wife Rebecca Dyer, and daughters Allison and Amy from previous relationships.
RELATED VIDEO: It’s a Boy! Katharine McPhee and Husband David Foster Welcome a Son
Back in April, McPhee and Foster chatted with Entertainment Tonight at Clive Davis’s 90th birthday celebration, where they raved about being new parents together.
“It’s great. It’s the best,” the star said, while her husband added, “She’s a fantastic mother. An amazing mother, and we are having the best time.”
McPhee told ONE she was “having so much fun” as a mom, despite some sleepless nights.
“I love it, absolutely. I mean, last night was a little rough, the time … he was up and then you know, when you’re traveling with the kid, you have your moments where you get over-tired and frustrated, “she explained. “But it’s just so precious because it’s just a moment in time that is not going to last forever, so, in my perspective I just cherish.”