Kevin Federline reveals in his upcoming memoir that his wife, Victoria Prince, stays in touch with his ex Britney Spears' family. Federline, 47, writes in You Thought You Knew that Prince, 42, has received at least two lengthy messages from Britney's sister, Jamie Lynn Spears, since the Princess of Pop's 13-year conservatorship ended in 2021. First, Jamie Lynn, 34, contacted Prince about Britney, 43, "lashing out" at the former couple's two sons, Sean Preston, 20, and Jayden James, 19, on social media, according to Federline's book.