Charlotte Ronson and Nate Ruess Welcome Baby Boy -- See the Cute Pics!

This video is unavailable because we were unable to load a message from our sponsors.

If you are using ad-blocking software, please disable it and reload the page.

Nate Ruess and Charlotte Ronson are new parents!

The former fun. frontman and his girlfriend, Charlotte Ronson, have welcomed their first child -- a baby boy named Levon Ronson-Ruess, ET can confirm.

MORE: fun.'s Nate Ruess Reveals 'Favorite Song I've Ever Written'

While the happy couple haven't officially shared any photos of their bundle of joy, the new mom's family had no qualms about snapping some cute pics with the precious newborn.

Charlotte's mom, jewelry designer Ann Dexter-Jones, took to Instagram on Monday to share a collage of photos showing her bottle feeding the little guy -- whose face isn't shown in the pics.

"#iamsoinlove with my very first #newborn beautiful #grandchild," Ann wrote. "To the left of my photo that eludes you is an incredibly beautiful and adorable baby #takemyword."

Charlotte's brother, "Uptown Funk" artist Mark Ronson, shared a polaroid picture of himself also feeding Levon, which he captioned, "I love my nephew."

PHOTO: We Can't Get Enough of These Adorable Celeb Kids

On Sunday, Charlotte's sister, English DJ Samantha Ronson, also shared a photo of her hanging with the new addition to the family. In the pic, a hoodie-wearing Samantha cradles the newborn in her arms as she smiled for the camera.

"Happy Birthday to you @nateruess! On your birthday I just want to say.... Thank you for the best gift ever..... my cafe du monde sweatshirt! Oh and my nephew is pretty awesome, too," she joked in the caption. "What a generous guy you are.... #happybirthdaynateruess."

Congrats to the happy couple!

WATCH: They're Having a Baby! Hollywood's Best Celeb Pregnancy Announcements

Related Gallery