There are a whole lot of celebrities who are rumoured to be attending the royal wedding next month.

Yep, A-listers from every corner of the world will apparently be on hand to watch Prince Harry, 33, marry Meghan Markle, 36, on May 19.

The Mirror has compiled a handy list of everyone who will most likely make an appearance at the royal wedding, and we are definitely going to use it as a reference when we play Celebrity Bingo: Royal Wedding Edition on the day of the ceremony.

According to the publication, British television personality and host of hit series Love Island, Caroline Flack, will be there, along with British singers Ellie Goulding and Joss Stone.

Elton John has already cancelled two concerts on the weekend of the wedding, so it's almost certain he'll be in attendance.

The 36-year-old bride is also close friends with Made In Chelsea star Millie Mackintosh, so she's likely to be there, too.

Other famous friends of Meghan's include Serena Williams and Priyanka Chopra, so expect to see them there as well.

And while Donald Trump is reportedly frothing for an invite, insiders say he's unlikely to score one, with Harry favouring his friends, Barack and Michelle Obama, over the current US President.

"There is no reason he would be invited," a royal source told Mirror of Trump.

Another politician who will probably be in attendance though is Canada's Prime Minister, Justin Trudeau.

There are also at least 16 people from the TV series Suits set to attend, with Meghan's co-stars Patrick J. Adams, Gabriel Macht, Sarah Rafferty, and Abigail Spencer all rumoured to be on the guest list.

Harry is also reportedly planning on inviting two of his ex-girlfriends, because that's just the kind of guy he is, with Chelsea Davy and Cressida Bonas both rumoured to be attending.

Meanwhile, Meghan's best friend, wedding planner Jessica Mulroney, is rumoured to act as her maid of honour on the big day.

So there you have it, the who's who of the royal couple's wedding guest list. May 19 can't come soon enough.

Meghan Markle had to go to 'kidnap training'. Hear about that below.

For everything Prince Harry, Meghan Markle and the Royal Wedding, visit our Royal Wedding hub.