Kate Middleton and Prince William shared their first kiss as a married couple today! The new Duke and Duchess of Cambridge took their positions on the Buckingham Palace balcony for their smooch, along with Middleton's family and Queen Elizabeth II. Prince William first planted a quick peck on Middleton, and then went back for a longer second liplock after he heard the crowd chanting "Give her another kiss!" He did, which led the fans below to erupt in cheers. How sweet! Click through the gallery to see more celebrity wedding kisses!