VIDEO : Kate Middleton and Prince Harry's Cutest In-Law Moments Ever

Although Kate Middleton has shared plenty of memorable moments with her other half, Prince William, over the years she's also had some sweet and hilarious interactions with her brother-in-law, Prince Harry. He regularly has her laughing out loud when they attend events together, whether they're cracking up on the Buckingham Palace balcony or flashing big smiles in the stands.