Oprah Winfrey was spotted walking in along with Idris Elba, James Blunt and Princess Diana???s brother Earl Spencer.

Prince Harry???s ex-girlfriends Cressida Bonas and Chelsy Davy walked in together, Sky news reported. Chelsy wore a navy blue ensemble with a blue cape and nude heels.

George and Amal Clooney and David and Victoria Beckham arrived within minutes of each other. Amal Clooney wore a canary yellow dress and hat, while Victoria Beckham wore navy blue and David Beckham stopped to take a selfie at the entrance to the event with Amelia Thompson, a survivor of the Manchester Arena bombing.

Earlier, Serena Williams shared pictures of herself getting ready, ending speculation over whether she had been invited to the event. She wore an elegant pink outfit with matching fascinator and posed alongside her husband Alexis Ohanian, and eight-month-old daughter, Alexis Olympia.

Kate Middleton???s family arrived together, with Pippa Middleton wearing a mint green long-sleeved dress over her baby bump. Former England rugby player Jonny Wilkinson also arrived with his pregnant partner.

Click on the gallery to see who attended and keep checking back for more updates