Britney Spears gave birth to a boy — her second — late on Monday night, a source close to the family has confirmed to MTV News. The couple have named their second son Sutton Pierce, according to a source.

While no official statement has yet been issued, Life & Style magazine reported speaking with Kevin Federline, Spears' husband and the boy's father, at Cedars-Sinai Medical Center in Los Angeles. According to the magazine, Federline said, "Mom and baby are doing well, thanks, but we're all really tired."