Sir Elton John has admitted that despite his connections to the Royal family, he isn't expecting an invitation to Prince William's wedding. 

Speaking exclusive on the matter to Reuters, the 'Your Song' icon said:

"I'm not invited to the wedding, I would not expect to be invited to the wedding," 

"I don't really know the boys at all,"

"I met the boys and had lunch with them when their mother was alive. I re-met them again when I did the concert for Diana a couple of years ago -- the memorial concert."

He added:

"I just wish them the happiest of lives together," 

"They seem very happy. He's a really terrific man, William, and he's going to be a great king."

Watch Sir Elton's performance of 'Candle In The Wind' at Princess Diana's funeral here: