LATEST: Britney Spears has denied news reports she's pregnant with her third child. American publications have reported the pop star is four weeks pregnant with music producer J.R. Rotem's baby - and the young mogul has reportedly confirmed the news overnight (27-28Nov07). Rotem, who has dated Spears on and off throughout 2007, allegedly told In Touch Weekly magazine, "It's true." The Toxic singer, who turns 26 on Sunday (02Dec07), reportedly emailed close friends a copy of her baby's ultrasound on 16 November (07), swearing her confidantes to secrecy. But now Spears is speaking out about the story, insisting she is not with child. After spending the night shooting a video for her new song Piece of Me in Hollywood, Spears sent a cellphone text to Los Angeles radio host Ryan Seacrest to rubbish reports early on Wednesday (28Nov07). Heading home "to sleep" after the all-night shoot, Spears wrote, "It's B.S, I don't know who made it up. J.R. doesn't even know what's up. It's fake, completely fake." Spears then apologised for not phoning into the show, explaining, "(The) paparazzi are trying to kill us, otherwise I'd talk."