Coco Arquette is a big sister! The 9-year-old’s famous father, David Arquette, has welcomed a baby boy with girlfriend Christina McLarty. His rep confirms the happy news with People, telling the magazine the little guy arrived on Monday, April 28, and weighs in at 8 lbs., 7 oz.

“Mom, Dad, and baby are doing well,” David’s rep adds. “They appreciate all of your well wishes and thank you for respecting their privacy at this time.”

Thankfully for curiosity’s sake, David and Christina have released their new son’s name: Charlie West. Charlie and Coco — we like it!

Coco, of course, is David’s child with ex-wife Courteney Cox. The two officially divorced in May 2013, although they had been separated for several years prior. The 42-year-old actor began dating Christina in 2011, and we heard the on-again, off-again couple were expecting last November.

In January, David told TV host Ellen DeGeneres that Coco was “really excited” to be a big sister despite some initial butterflies. “At first she was nervous because, you know, it’s a big deal,” he explained. “At first I was nervous. I was like, 'Woo, heavy.'”

Little Charlie does sound like a bit of a hefty boy! Congratulations to the family!

Source: People

Elisabeth Kramer is an Assistant Editor at Wetpaint Entertainment and our resident Downton Abbey expert. Follow her on Twitter and Google+!