George and Amal Clooney stole the spotlight when they arrived at Windsor Castle ahead of Prince Harry's and Meghan Markle's wedding.
Amal was a vision in yellow as she walked alongside George's side ahead of the big event.
Among the celebrities attending the event are David and Victoria Beckham, Tom Hardy, Priyanka Chopra, James Blunt, the cast of Suits, Serena Williams and more.
Serena Williams finally confirmed to her army of followers that she was on her way to the royal wedding as she took to her Instagram dressed in a towel. The star, who met Markle in 2014, kept fans guessing until today as to whether she was attending but in a clip on social media revealed.
'Hey y'all, so my friend's getting married today. I'm up super early, well, for me,' she shared.
Local celebs, including Sylvia Jefferies, Tiffany Hall and Renee Bargh all posted photos of themselves in royal-style poses.
Watch our live stream of the event here.