Prince Harry, Kate Middleton, Prince William at London Marathon

Prince Harry was the royal hugger-in-chief Sunday as he joined the Princess Kate and Prince William as they cheered on runners at the start of the London Marathon

Kate Middleton steps out in €1,200 floral Erdem dress at charity event with Princes William and Harry

Prince William and Kate Middleton share nostalgic photo for Prince Harry's birthday

Kate Middleton Competes Against William and Harry in Charity Race

Wait, are Prince William and Kate Middleton Running a Marathon or Not?

Prince Harry Asked Prince William to Be His Best Man

Prince Harry, Prince William, and Catherine speak at Heads Together briefing in London

Prince William, Prince Harry and Kate Middleton Host a Kids' Party at the Palace -- See the Pics!

Prince William, Prince Harry and Kate Middleton start the London Marathon despite heightened race security

Prince William and Kate will run London Marathon 2013, jokes Prince Harry - Mirror Online

Prince Harry: Wills, Kate for marathon

Duchess Catherine, Prince William and Prince Harry attend Virgin Money London Marathon

Kate Middleton steps out in €1,200 floral Erdem dress at charity event with Princes William and Harry

Kate Middleton, Prince William and Prince Harry Had The Best Time Cheering on Runners at the London Marathon

Kate Middleton, Prince William And Prince Harry Run For A Good Cause