July 2, 2006 -- BRITNEY Spears' younger sister, Jamie Lynn, 14, has turned into a bully and gotten one of her "Zoey 101" co-stars fired. Last August, Page Six reported Jamie Lynn and Britney ganged up on Jamie Lynn's "Zoey 101" co-star Alexa Nikolas after the two tweens got into a spat on the set of the Nickelodeon show. A source told us then, "Britney had the talent coordinator bring Alexa over to Jamie Lynn's trailer, where she proceeded to scream that Alexa was an 'evil little girl' and that she had better watch herself or she 'will never work in this town again!' " It seems Britney kept her word - Nikolas has been fired, our source says, mollifying Jamie Lynn, the show's star and resident chubby-cheeked diva. According to our spy, "The new scripts for the third season of 'Zoey 101' are out. Nicole, Alexa's character, has met with a bad accident . . . So far Nickolodeon and the Spears family have managed to keep this quiet. Nicole is a big fan favorite and they are keeping it from the kiddies for as long as they can. But Alexa hasn't worked since the big blowup with Britney." Reps for the show and Jamie Lynn didn't return calls.