Jayden James Federline is Britney Spears
and Kevin Federline
's youngest son.
He is called Jayden or J.J.
He was born on September 14th 2006 in Los Angeles.
He has 3 older siblings.
1 half brother, Kaleb and 1 half sister, Kori on his father's side.
And 1 brother, Sean Preston (called Preston).
Jayden looks accactly like his mother Britney did when she was little.