Kate-William's royal tour

Prince William kisses his wife Kate, Duchess of Cambridge, after William's team, Royal Salute, won the Foundation Polo Challenge  at The Santa Barbara Polo & Racquet club in Carpinteria Calif.Kate, the Duchess of Cambridge, stands with her husband Prince William, Duke of Cambridge, and his team, at the trophy ceremony after they won the Foundation Polo Challenge at The Santa Barbara Polo & Racquet club in Carpinteria Calif.Prince William and Kate, the Duke and Duchess of Cambridge sign a guest book at the ENMAX Conservatory with Alberta Premier Ed Stelmach , left,  and Lt. Gov Donald S. Ethell at the Calgary Zoo in Calgary, Alberta, Canada.Prince William and Kate, the Duke and Duchess of Cambridge, prepare for their departure at Los Angeles International Airport 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 UK on Sunday.