Spears has put her music career on hold

His name, Jayden James Federline, was uncovered after his birth certificate was filed with officials this week.

The birth, on 12 September, has still not been officially announced by the singer and husband Kevin Federline.

It was originally reported the couple had called the child Sutton Pierce, giving him the same initials as their first son, Sean Preston.

Teenage fame

There were also rumours the baby was a girl after celebrity magazines claimed Spears had been spotted shopping for pink baby clothes.

Spears, 24, achieved global fame at the age of 17 with her number one single Hit Me Baby One More Time, going on to sell millions of albums.

But she has put her music career on hold to raise her children, releasing her last album - a greatest hits compilation - in 2004.

She married dancer Kevin Federline in September 2004, five months after they began dating.

Earlier that year, Spears married friend Jason Alexander in Las Vegas. That marriage - described as a "joke" - was annulled 55 hours later.