It's official: Britney Spears is not a girl, not yet a woman, but almost a mother. In a posting on her website, the 23-year-old pop tart confirmed the "wonderful news" that she's expecting her first child with husband Kevin Federline. She also acknowledged rumors that she was hospitalized Saturday in Florida. "There are reports that I was in the hospital this weekend, and Kevin and I just want everyone to know that all is well," she added. "Thank you for your thoughts and prayers." Doctors, meanwhile, have ordered Brit to lay off smoking, drinking and walking into gas-station bathrooms barefoot until she sees the baby's head.