Britney Spears has reportedly sent a cease and desist letter to sister Jamie Lynn Spears after she called the pop star's behaviour "erratic", "paranoid" and "spiralling" in her press tour. Jamie Lynn's memoir, called 'Things I Should Have Said', was released this week with the book discussing pivotal moments of Britney's life. In a new letter, obtained by Page Six, Britney's … [Read more...]