It looks like a very special guest will be singing at Prince Harry and Meghan Markle's wedding

And it's lovely.

Prince Harry and Meghan Markle confirmed their engagement last year, with the couple set to wed at St George’s Chapel at Windsor Castle, this weekend.

With the nuptials fast approaching, speculation is building around every aspect of the royal wedding day, from Meghan Markle’s wedding dress designer to who will be giving speeches at the reception.

Most recent focus however has centred around the guest list, with a host of famous faces expected to be in attendance.

The Duke and Duchess of Cambridge’s ceremony boasted a star-studded guest list, from Victoria and David Beckham to Ellie Goulding. But with 33-year-old Harry running in celebrity circles and Meghan being a former Hollywood actress, their wedding guest list is set to be even more impressive. Even Meghan's Suits co-stars have arrived in London - a hint that they are all on their way to Windsor for the nuptials.

It has been reported that one special guest is also going to be providing some entertainment.

70-year-old singer and close friend of Princess Diana, Elton John, set rumours alight earlier this year when he cancelled his plans over the May wedding weekend, rescheduling two performances of his Las Vegas show, originally set for 18-19 May, due to ‘a scheduling conflict.’

Fans hoped this meant we would be seeing Elton in the Windsor Castle pews, and according to TMZ, we will, with reports that Elton would definitely be performing.

There's no word yet as to whether Elton will be performing at the church or at the reception, but if there’s one thing for sure, it looks like this is going to be the wedding of the year.