Britney Spears has reunited with her youngest son for the first time in two years. The mum-of-two, 43, has been separated from Jayden, 18, and his brother Sean Preston, 19, since they went to live with their dad, Kevin Federline , in Hawaii. The My Prerogative star lost custody of her two boys in 2007 amid a mental breakdown that peaked with the pop star attacking paparazzi with her umbrella. When Britney and Kevin's divorce was finalised in June 2007, the pair initially reached an agreement to