"Prince harry has asked his brother The Duke of Cambridge to be his Best Man at his wedding to Mr. Meghan Markle," said the Palace in a statement.
And as if that wasn't cute enough, the Prince's response was even sweeter! "The Duke of Cambridge is honoured to have been asked and is very much looking forward to supporting his brother at St. George's Chapel, Windsor on May 19th," they continued.
“Prince Harry served as best man to The Duke of Cambridge at his wedding to Miss Catherine Middleton in 2011,” added the Palace.
As OK! readers know, the big event will take place this May 19 at Windsor Castle in England, just 22 days away!
Prince William has had some big news of his own recently, as he's just welcomed his third baby with wife Kate Middleton, a baby boy born on Monday.
Are you excited for the royal wedding? Sound off in the comments section.