Eugenie is the 28-year-old daughter of Prince Andrew and Sarah Ferguson, and ninth in line for the throne.
Dean of Windsor David Conner will officiate and give an address.
We love a royal wedding, and we've been absolutely spoiled this year with two.
Coincidentally, Trevor, 41, got engaged to Tracey, 32, just weeks after Meghan's royal wedding to Prince Harry, having proposed on June 1 after a year of the pair dating.
A source close to the royal couple, who tied the knot in May, told US Weekly that the Duke and Duchess of Sussex are excited to start a family. "I remember being like "I really, really like this guy, I really want him to like me too", she said.
According to Parker, Eugenie's ring wasn't meant to be a copy of Catherine's ring, which originally belonged to Princess Diana.
Stars from the world of showbusiness and sport attended Harry's wedding and Buckingham Palace announced that one of Eugenie's bridesmaids will be Theodora Williams, the six-year-old daughter of pop star Robbie Williams and his wife Ayda Field.
It has been the greatest privilege and honour to create the flowers for Princess Eugenie and Jack, on their Wedding day.
The special show will follow the arrivals of the royals and celebrity guests. "It's obviously going to be quite a grand occasion, but I hope also, that it will have an air of intimacy about it".
Eugenie, a director at London's Hauser & Wirth art gallery, and Brooksbank, who is European brand manager for Casamigos Tequila, which was co-founded by USA actor George Clooney, met in the Swiss ski resort of Verbier in 2010.
The queen, who has only just returned from an extended summer holiday in Scotland, plans to host a champagne luncheon for the newlyweds shortly after the ceremony, and a second reception will be held that night.
In addition to watching the ninth in line to the throne Wednesday her beau of eight years, the nuptials offer the ideal chance for some celebrity spotting.