Kensington Palace confirmed today that the Prince asked his brother, the Duke of Cambridge, to officially serve as his best man.
Obviously, he said yes!
The Palace tweeted out the announcement, complete with adorable photos of the royal brothers. According to the Palace, Prince William is happy to return the favor to his little brother, who served as William's best man when His Royal Highness married Kate Middleton in 2011.
Royal wedding fever is in full swing in the UK. Prince Harry is set to wed former actress Meghan Markle on May 19 at St. George's Chapel.
As for Meghan, who will serve as her maid of honor — or if she will even have one — is still up in the air.
The royal nuptials are coming less than a month after the Duke and Duchess of Cambridge welcomed their third child.
Kate Middleton gave birth to a little boy earlier this week. His name is yet to be announced.