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.
Eugenie was determined to make sure her lavish wedding bash was bigger and better than Meghan's May nuptials.
Because the wedding takes place on a weekday, and they are "minor" royals, it is unlikely to attract the 13 million United Kingdom audience of her cousin's wedding.
Princess Eugenie couldn't stop smiling as she and Jack arrived in Windsor.
Gales and heavy rain to end the week
It means an increased likelihood of travel delays, road and rail closures, power cuts and potential risks to life and property . Flood barriers have already been erected in Galway, with flooding likely along the Salthill and Spanish Arch areas of the city.
The other bridesmaids include Zara and Mike Tindall's daughter Mia, four, Savannah Phillips, seven, and Isla Phillips, six, who are the daughters of Zara's brother Peter, and five-year-old Maud Windsor, the daughter of Lady and Lord Frederick Windsor.
"She continued: "You know Dad loves you, you know he's been there for you more than anyone, so don't let this public monster and misperception that he's like a sperm donor dad trying to be involved all of a sudden". The other page boy will be Louis de Givenchy, 6, the son of Zoe De Givenchy and Olivier De Givenchy. The Queen's youngest grandchildren, Lady Louise, 14, and James, Viscount Severn, 10, will tackle the positions of Special Attendants under the guidance of their proud parents Prince Edward and Sophie Wessex.
After the service, the couple will embark on an open-top carriage tour of Windsor, although shorter than the one Harry and Meghan, now the Duke and Duchess of Sussex, took when thousands lined the streets of the town.
It's time for another royal wedding at Windsor Castle - but this time it's less of a global TV spectacle and more of a family affair.
The queen will then host a reception for the couple and their guests at the castle.