Other members of the Royal Family have already been seated, as they arrived before the Queen.
Other celebrity guests at Eugenie's wedding include David and Victoria Backham, Sir Elton John, Ed Sheeran, Robbie Williams, Ellie Goulding, James Blunt and more.
British fashion and portrait photographer Alex Bramall was named as the official photographer by Buckingham Palace on Friday morning.
“It is an honour and a privilege to be invited to photograph Princess Eugenie and Jack on this most special of days,” Mr Bramall said.
“I look forward with great excitement to capturing this significant occasion and wish them both a happy future together.”