The 35-year-old singer and Charlotte, 39, welcomed son Levon Ronson-Ruess earlier this month (Feb17), according to the New York Post's gossip column Page Six.

A source told the outlet that Charlotte's family, including Uptown Funk star Mark Ronson and DJ Samantha Ronson, are "over the moon" about the new arrival.

Nate and Charlotte began dating in 2014, with the singer crediting the designer for helping to inspire his album Grand Romantic and single Nothing Without Love.

"I caught myself in a great headspace. My current relationship feels like it's not letting up; it clicks, and I'm learning so much," he told Billboard magazine during an interview in 2015. "But to me, love means all the people around you. It wasn't necessarily about one relationship. I'm very thankful for the people I have in my life, and I think that was a big catalyst."