14/08/2014 12:32 BST | Updated 22/05/2015 06:12 BST

Prince William And Prince Harry At The Royal Wedding: THIS Picture

On April 29 2011 - as the world waited to catch the first glimpse of the Duchess of Cambridge Kate Middleton's wedding dress - nervous groom Prince William sought last-minute reassurance in his younger brother Prince Harry.

Good person to have in a anxious-making situation? You bet. Who knows what Harry said to William in those moments before he caught sight of his wife-to-be? It doesn't really matter because it got them both smiling, which reaffirms what we've always believed - Prince Harry would be the best Best Man EVER.