The royal wedding is just a couple of weeks away. The all-important guest-list remains under wraps, but a couple possible invitees are sure to surprise.

The Most VIP Event Of The Year

Prince Harry and Meghan Markle are set to tie the knot on May 19 at St. George's Chapel, which has a reasonable capacity of 800. This is in stark contrast to the 2,000 capacity of Westminster Abbey, where his brother, William, got married back in 2011. There's plenty of room for friends and family, with a few celebrities guaranteed to make an appearance also.

Harry's two most significant exes, Chelsy Davy and Cressida Bonas, are the most recent rumored guests for his big day. He had an on-off relationship with Davy for several years while he was in his mid-twenties. Their most recent reconciliation was in 2011. As for Bonas, Harry dated her for two years, calling it quits in 2014.

Reportedly, it was the media scrutiny of their relationship that led to both ultimate endings.

"She's really low-key, sweet and down-to-earth. She didn't talk about Harry at all. She wasn't like that," said a friend of Bonas around the time of their breakup.

Still On Good Terms

The Prince has remained in contact, and on good terms, with both women. He may even be close to them enough to invite them to his upcoming nuptials.

Harry also remains socially connected to both women, with Bonas remaining close friends with his cousin, Princess Eugenie, who has her own wedding later this year. He even made prominent appearances at two plays Bonas performed in just a few years ago.

Davy, on the other hand, confirmed in June 2016, just a few weeks before Harry met Meghan, that the two were still in touch.

"I think we will always be good friends," she said at the time.

Although it may seem strange to invite your exes to your wedding day, there is a royal precedent. Prince William invited five of his past paramours to his wedding to Kate Middleton. Likewise, Prince Charles invited Camilla Parker-Bowles, now his wife, to his wedding to Princess Diana along with Lady Sarah Spencer, who also happened to be the bride's sister.

'Call The Whole Thing Off'

With the wedding plans in overdrive, more details are emerging about Markle's alleged hair and makeup looks for the big day, as well as rumors about who might play maid of honor on the day.

In the midst of all the madness, her estranged half-brother penned an open letter to InTouch magazine, warning Harry to call off the wedding.

"As more time passes to your royal wedding, it became very clear that this is the biggest mistake in royal wedding history. Meghan Markle is obviously not the right woman for you. I'm confused why you don't see the real Meghan that the whole world now sees," he warned in the lengthy screed.

Thomas Markle Jr., who has not seen Markle in several years, previously claimed she was trying to turn herself into the new Princess Di.

Likewise, the ex-Suits star's estranged half-sister has complained publicly about not being invited to the wedding.

Prince Harry and his bride-to-be were teasing some form of public involvement in their big day, and finally, it's been announced that they've announced an additional 1,200 members of the public to celebrate with them on the grounds of Windsor Castle later this month.