Here is the article from The National Enquirer:
Pop princess Britney Spears gave birth to a 6 pound, 11 ounce baby boy just before 2 a.m., September 12th at a Los Angeles hospital, insiders told The ENQUIRER in an exclusive.
"Kevin took Britney to the hospital in the evening hours of Sept. 11 to prepare for the Cesarean birth," an insider said. Only her mother Lynn, and her sister Jamie Lynn were present at the birth. None of Kevin’s family was there.
"Kevin sent a text message over his cell phone to all the Federline family members to let them know," the source said.
Britney wanted to have her second child on September 14, the first birthday of Sean Preston but Kevin put his foot down, the source said. He didn’t want the kids to have the same birthday.