Britney Spears has bluffed the press with the name of her youngest boy, according to reports.

The artist, who had the baby with husband Kevin Federline, announced his name as Sutton Pierce, to match the initials of her first-born Sean Preston.

However, members of the public have overheard Federline's mother calling the boy Jayden, and sources claim his full real name is in fact Jayden James.

There has been no official comment from Spears or her family, leaving the case open for the time being.