The Queen and Prince Philip have taken their seats in St George's Chapel alongside Eugenie's mother, the Duchess of York, and her sister Beatrice.
Instead, Jack wanted Eugenie's ring to be a copy of the one her dad, Prince Andrew, gave her mom, Sarah, Duchess of York, Marie Claire reports. Among the bridesmaids and pageboys are Prince William and Kate's eldest children, Prince George, 5, and Princess Charlotte, 3; Zara and Mike Tindall's firstborn daughter, four-year-old Mia Tindall; and Savannah and Isla Phillips, aged seven and six respectively, the daughters of Peter and Autumn Phillips.
They will undertake a short ride in a carriage from the Royal Mews, out of Windsor Castle and on to part of the High Street after the wedding.
Criticism has already been levied at the estimated £2 million security bill, which falls to the taxpayer, for Eugenie's wedding.
In an interview on the eve of the royal wedding, the Queen's granddaughter said she was nervous but couldn't wait to exchange vows with drinks industry executive Jack Brooksbank, 32, because "it was love at first sight", the Daily Mail reported.