Mae Whitman has officially entered parenthood.

The Parenthood star announced the birth of her first child—a son—on Aug. 28, sharing a photo of the newborn’s feet while referencing Justin Bieber and Hailey Bieber‘s recent baby news.

“Not to be a Bieber about it but I too just gave birth to our son, Miles,” Mae wrote on Instagram. “From the moment we heard the first tiny sound out of his tiny piggy mouth we were besotted.”

Calling him “the kindest, gentlest, smartest, funniest little beebee,” the 36-year-old went on to reveal that her baby boy was named after Parenthood costar Miles Heizer, who played her younger brother on the NBC show.

“He’s our best friend (pretty much exactly like his namesake Uncle Miles),” Mae continued of her child, who she welcomed with an unnamed partner. “We are infinitely grateful he chose us as his parents.”

She added, “We love you! We’re so happy!”

Indeed, Mae and Miles, 30, have kept in touch since their show ended its six-season run in 2015. In fact, he was there—alongside with their onscreen mom Lauren Graham—when the Good Girls actress announced her pregnancy.