Britney baby birth rumors swirl

"We have nothing to report and when we have we will let you know," Sonia Muckle, Spears' spokeswoman at her Jive Records label, told Reuters late on Tuesday.

If the reports prove correct, the baby was born just two days short of the birthday of Spears and Federline's first son's birthday. Sean Preston turns 1-year-old on September 14.

The former teen idol, who posed nude for Harper's Bazaar magazine when she was six months pregnant, had led celebrity magazines to believe she was expecting a girl. Some reports in the past week had even said she planned to name the child Jamilyn, after her younger sister Jamie and her mother Lynne.

Spears announced she was pregnant with her second child during a surprise appearance in May on the CBS "Late Show with David Letterman."

Spears and Federline married in September 2004.