Katharine McPhee Enjoys Indoor Pool Party with 4-Month-Old Son Rennie: 'Mommy & Me'
Katharine McPhee is enjoying a chill day with her little guy.
In the snap, the Country Comfort star is drinking a Blue Moon beer while holding onto the yellow, pink and blue pool float carrying her baby boy. The blow-up pool is situated in the middle of a large room filled with swim accessories like life vests and bathing suit coverups.
While it is unclear what baby Rennie wore for the pool party, McPhee is seen in a black sports bra and her hair tied back in a bun.
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.
McPhee stood next to a yellow dress while nursing her son and hiding her breast in the photo with a sweater.
Rennie is the first child for McPhee and the sixth for Foster, 71, who has five daughters from previous relationships.
RELATED VIDEO: Katharine McPhee Shares a Bikini Photo 1 Month After Giving Birth: 'Loving My Curves'
"It's a growing family, and David's doing great," McPhee said. "He's always walking into a room saying, 'Where's my baby? Where's our baby?' He wants to hold the baby all the time, and be around the baby."
As for McPhee, the actress is loving every minute of motherhood.
Asked by host Kelly Clarkson if she is tired after welcoming her son, McPhee said, "I'm a little bit tired here and there but I find times to nap," before she added, "He's such a good little baby and I'm so in love ... It's my greatest job I'll ever have."
McPhee welcomed her first child with Foster on Feb. 22, her rep confirmed to PEOPLE exclusively at the time. "Katharine McPhee and David Foster have welcomed a healthy baby boy," the rep told PEOPLE at the time. "Mom, Dad and son are all doing wonderfully."