Baby's name isn't Sutton Pierce after all

What's in a name? That which we call a Federline by any other name would smell as pungent -- especially one wearing diapers.

The name of Britney Spears and K-Fed's second offspring is Jayden James -- not Sutton Pierce as the media had previously reported.

TMZ.com got their hands on the tyke's birth certificate, which was officially filed at the L.A. County Registrar-Recorder's office on Tuesday, Oct. 24. The certificate was actually received in the offices closer to the date of Jayden's birth on Sept. 12.

The document was signed by the proud father himself -- Kevin Earl Federline.

While Spears is working on losing her pregnancy weight, K-Fed has been continuing his TV career after appearing with his wife (then girlfriend) on their reality show "Chaotic." He recently appeared on an episode of CBS' "C.S.I." and has been seen taunting WWE Champion John Cena on USA's "WWE Monday Night RAW."