In January, Prince William joked that he had not yet been asked to be best man but the clash of dates could be a "sensitive subject". The soon-to-be-married prince is now sixth in the line of succession after William and Kate had their third child earlier this week.
With the prince's wedding to United States actress Meghan Markle just over a month away, speculation has been mounting over who would be asked.
Prince Harry served as best man to The Duke of Cambridge at his wedding to Miss Catherine Middleton in 2011. And ironically, Markle's TV wedding comes just a few weeks ahead of her real-life nuptials to Prince Harry on May 19 at Windsor Castle.
Kensington Palace announced today Prince Harry had asked William, 35, to perform the honour at his wedding to Meghan Markle next month.
"From the second I met you, I knew I wanted to be here with you someday - walking down the aisle arm in arm", Mike tells her.
William joined Harry and his fiancee on Wednesday in London at a service for Anzac Day, Australia and New Zealand's national day of remembrance. Especially for Prince William's speech.
"Jerry's a strong name", William said.
"It was so sweet and natural and very romantic", Meghan added.
"Arthur remains the favourite but we're seeing a lot of money for Albert at the last minute". A source said at the time, "Harry has several close guy friends, but there's no way he would ask anyone but William to take on the top job".
"Funny you should say that", Prince William replied. "It's a good name".
Chopra revealed to Fallon that their friendship kick-started several years ago when they first met at Elle magazine's Women in Television dinner.
Bookmakers have Switzerland and the Scottish Highlands as their favourite stag destination.