Britney Spears and Kevin Federline will officially divorce on Monday (30Jul07), according to breaking U.S. reports. The pop superstar's lawyer, Laura Wasser, and her estranged husband's attorney, Mark Vincent Kaplan, started proceedings at Los Angeles County Superior Court on Monday morning (30Jul07). reports Wasser will make a motion to keep the custody and spousal support orders secret. Insiders claim the custody will stay at 50/50, despite recent claims Federline is pushing to win full custody of his sons as a result of Spears' recent erratic behaviour - she stripped to her underwear for an afternoon swim in the Pacific Ocean and walked away from a magazine interview with thousands of dollars worth of clothes and accessories. The couple split in November (06).