Update: A source tells us that Britney was out getting ice cream at 4:30 pm PST, and is not in labor right now – although she may be at the hospital. It won’t be a surprise if her scheduled c-section occurs tomorrow morning or afternoon, but a Thursday night birth looks unlikely. It is still believed by many that Britney won’t be having the baby for another two weeks (unless she went into early labor), but paparazzi and reporters will be checking the story out anyhow, just in case!

According to E! News, Britney Spears is in labor right now. Paparazzi are camped outside of the hospital (the same one Sean Preston was born at).