Charles Melton has become a dad.

The Riverdale alum - who played Reggie Mantle in the CW teen mystery drama - and his partner, director-and-photographer Camille Summers-Valli, showed off their newborn with a series of sweet shots shared to Instagram on Monday (09.03.26).

Charles' photo carousel included images of the couple bonding with the little one - whose face was covered - throwback pictures of Camille pregnant, and the pair enjoying individual private moments with their bundle of joy.

He captioned it: "Our family."

Charles did not reveal the identity of his and Camille's first child, nor the date of the child's birth.

The couple - who went public with their romance in January - were showered with congratulatory messages from their celebrity pals in the post's comments section.

Charles' 29-year-old Riverdale co-star Lili Reinhart (Betty Cooper) penned: "Angels."

Sirens actress Julianne Moore, 65, penned: "Beautiful family."

And Heartstopper cast member Kit Connor, 22, typed: "Love all of you."

Charles' fans also wished the couple well, as one user commented: "Oooo my goodness, sweet blessing! Congratulations @melton you are going to be the best daddy!!!!

"So so happy for your beautiful family xoxoxo (sic)."

A second person left: "Aww so happy for you guys! I already love her sm!!! (sic)"

And a third supporter said: "And what a beautiful family it is. Congratulations."

In January, Charles and Camille took to Instagram to announce that they were expecting their first child together.

She shared a series of images showing off her baby bump, including one of Charles kissing her belly.

The post caption read: "making a lil family. (sic)"

Charles and Camille have kept their relationship out of the spotlight.

However, DeuxMoi received a tip that Camille was pregnant, telling the gossip outlet: "Fans are slowly discovering the news."

Charles' past romances include his Riverdale co-star Camila Mendes.

Camila, 31, admitted it felt awkward playing the on-screen love interest of her ex-boyfriend, Veronica Lodge.

Appearing on the Armchair Expert podcast, she explained: "Obviously, right when [a break-up] happens, it's hard, and it's emotional. It's the worst.

"But it's hard because the timing of the show. Anytime we started to hook-up off set and knew that something was brewing, our characters would start dating. But they didn't know. No one knew. The writers would just naturally make it happen."

Charles and Camila had an on/off relationship for years before they called it quits forever, before the final season of Riverdale, which came out in 2023.

And Camila was able to enjoy her last season on the hit TV show.

She said: "When we came back for the last season, there was a definite air of zen; we're past it, and we worked together a lot as well, but not in a romantic capacity. It went super smoothly last season. I think the whole last season felt different."