If speculation and royal experts' predictions are to be believed, Prince Harry and Meghan Markle might be having their magical moment, Kate and Wills style, sometime over the next year.
But if you've ever wondered what it's like to attend a royal wedding, you may be surprised to know there is one rule all wedding guests need to follow.
According to Duncan Larcombe, former royal editor at The Sun newspaper and one of the six journalists invited to William and Kate's wedding in 2011, no one can arrive after the Queen - expect for the bride, of course.
'One thing you can't do at a royal wedding is turn up after the Queen, as she will always be the second-to-last person to arrive after the bride,' he told Elle magazine.
No one can arrive to a royal wedding after the Queen, except the bride
'It was quite clear at the wedding that no matter if you were the Sultan of Brunei or a guy who's been at Sandhurst with William, or a big Hollywood star, everyone got there early. I think for someone like Sir Elton John, who is normally one to be the centre of attention, it was probably quite humbling.'
The royal insider also weighed in on how he thinks Harry's wedding will be like, saying it will likely be 'very different'.
'I would say that Harry's wedding would probably be very different from William's. William is the heir to the throne so it was a big national occasion, Harry will want to do everything he can to avoid that. William would have loved to avoid that but obviously he couldn't,' Duncan said.
Royal experts say Prince Harry and Meghan are likely to get engaged soon
'Harry's will be really interesting to see where they choose and the scale of it. I'd be surprised if it's not televised, I think they'll have to do that compromise. It could be on a par with William and Kate's as a television event because Harry's popularity spans the globe.'
Engagement rumours have been rife around Prince Harry and Suits star Meghan Markle, with experts saying the two might have big news to share in December.
After making their relationship official last year, the couple made their first appearance together in September at the Invictus Games in Toronto.