According to Kensington Palace‘s twitter account, Prince Harry asked his brother Prince William to be the best man in his upcoming wedding to Meghan Markle.
Prince Harry has asked his brother The Duke of Cambridge to be his Best Man at his wedding to Ms. Meghan Markle. pic.twitter.com/7TvZ2VlEk2
— Kensington Palace (@KensingtonRoyal) April 26, 2018
The wedding is scheduled for May 19th, 2018