Prince Harry has asked his brother Prince William to the best man at his wedding to Meghan Markle. And while it may be royal protocol for William to stand by his brother's side, as Harry did for him on his wedding day, the Duke Of Cambridge couldn't be more thrilled to support his little brother.
"The Duke of Cambridge is honored to have been asked, and is very much looking forward to supporting his brother at St. George's Chapel, Windsor on May 19th," Kensington Palace wrote in a tweet announcing that Harry had asked his brother to be his best man.
From a young age the princes have been inseparable. Prince Harry was just 12 years old when his mother Diana, Princess of Wales, died, while William was 15. The tragedy deeply affected both boys, but they always had each other.
William and Harry are more than brothers, they're best mates and we've loved seeing their relationship grow, as have they, in front of the public.
Before Harry follows in his older brother's footsteps and becomes a husband, and hopefully a father, we take a look back at the princes' most adorable moments.
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Scroll through to royally enjoy the brotherly love!