Prince Harry might be obliged to walk his ex-girlfriend, Chelsy Davy down the aisle, as their best friends, Tom Van Straubenzee and Lady Melissa Percy are due to get married next summer. 

A source close to The Mirror, said: "Everyone is absolutely delighted for Missy and Tom, they make the perfect couple. Tom absolutely adores her. They have been together for several years although did have a brief split and got back together last May." The source also added that, "Ever since then several people have been speculating an engagement would be on the cards." It is thought that Harry and Chelsy are the ideal candidates for the roles of best man and bridesmaid respectively. Harry and Van Straubenzee are best buds, with Tom helping out with the best man speech for the Royal wedding. Add to that Harry's heroics when Tom was threatened with a knife outside Battersea Power Station, the all things point to best man. A statement from the Percy family said yesterday: "The Duke and Duchess of Northumberland are delighted to announce the engagement of their younger daughter Melissa Percy to Mr Thomas van Straubenzee. The wedding is planned to take place in the summer of 2013."

The wedding is set to be the royal society event of the year, when it takes place. The whole inner circles of Royals will be toasting their nuptials, including Prince William and Kate, as the whole gang are close friends.