According to the National Enquirer, Britney Spears has given birth to her second child, another boy!
They claim she gave birth to a 6 lb, 11 oz boy just before 2 am this morning. Their source says,
"Kevin Federline took Britney to the hospital in the evening hours of September 11 to prepare for the Cesarean birth." 
They say her mother and sister were present at the birth.
Ok there has been no official confirmation of this and you have to remember this is the National Enquirer saying it so take it with a pinch of salt. If there are any confirmations I will update.