Jameson Moon is the second child for Pink and Carey Hart.

Pink and her motocross racer husband Carey Hart welcomed baby boy Jameson Moon Hart earlier this week, the pop star announced in a tweet Wednesday (Dec. 28). It's the second child for the couple, who also have 4-year-old daughter Willow Sage.

"Jameson Moon Hart 12.26.16," Pink wrote in the tweet, revealing that the baby was a belated Christmas present, born on Monday.

Jameson Moon Hart 12.26.16 pic.twitter.com/TQXK6Zo1ow

— P!nk (@Pink) December 28, 2016

Pink only announced that she was pregnant last month, posting a beautiful photo showing off her baby belly alongside daughter Willow with the caption "Surprise!" Pink and Hart have been married since 2006.

 

Surprise!

A photo posted by P!NK (@pink) on Nov 12, 2016 at 9:52am PST

This article originally appeared on Billboard.com.