London, Aug 9: Sir Paul McCartney's divorce from Heather Mills has taken another twist as the latter has hired the lawyer who won Princess Diana her 17 million pound settlement from Prince Charles. Mills' decision came after her estranged husband hired Fiona Shackleton to fight his case, the very woman who famously represented Prince Charles in the 1996 settlement. The extraordinary development came just 24 hours after the increasingly acrimonious split ended with police being called when Heather attempted to enter Sir Paul's London home with their two-year-old daughter after he had changed the locks. The 38-year-old former model has now replaced her long-standing lawyer Stephen Taylor with Anthony Julius of the firm Mischon de Reya. Cynics have repeatedly accused Mills of trying to cash in on Princess Diana's name.