Kate, the Duchess of Cambridge, arrives for her departure at Los Angeles International Airport on Sunday, July 10, 2011 in Los Angeles. Following a nonstop weekend that included a few chukkas of polo, time with Hollywood's own version of royalty and several events that raised millions for charity, Prince William and his wife, Kate, the Duke and Duchess of Cambridge headed back to the U.K. on Sunday. (AP Photo/John Shearer, Pool)