Prince Harry and Meghan Markle are determined to ''put their own stamp'' on their upcoming wedding.

The loved-up couple are set to tie the knot at St George's Chapel at Windsor Castle on May 19, and royal expert Katie Nicholl has revealed how their upcoming nuptials will break from tradition.

She said: ''The couple very much wanted to put their own stamp on it.

''I was told from one of Harry's friends that having been to so many weddings himself, he has quite a clear idea of how he wants his wedding - particularly the evening part, which is probably going to be the most fun part of the day.''

Prince Harry and Meghan have been working hard to ensure that their guests enjoy the reception, which will be a much more intimate occasion.

Katie told Entertainment Tonight: ''I'm told that Meghan and Harry have got all sorts of things planned for that evening wedding party, which will be a much smaller event.

''So, we know that there are going to be about 600 guests coming to the wedding, but only 200 of those will be invited to the evening reception.''

She said, too, that Meghan is adding some personal touches to her special day, which promises to be a ''really modern'' occasion.

Katie explained: ''Meghan also, as you would expect, has a very clear idea of what she wants on her wedding day.

''We've already seen her influence when it comes to the wedding cake. Traditionally when the royals marry, it's a wedding fruitcake - which is heavily iced and tiered and forms the centerpiece of the wedding breakfast table - but Meghan's going for something different. Something that is really modern.''