Kate's own wedding dress was designed by Alexander McQueen. Originally made for society host Margaret Greville in 1919, its style reflects that of the Russian Imperial court, according to the royal family's website.
While Beatrice's pale pink hat was compared to a pretzel or an octopus, Eugenie's pointy blue hat was judged for the over the top flower arrangement towering above it.
After the wedding, the newlyweds shared a kiss on the chapel steps before getting into a carriage for a short ride through the streets of Windsor.
It was the same setting as the lavish wedding in May of Prince Harry and his American actress wife Meghan.
He and Jack sported huge smiles as Princess Eugenie arrived at the church. "I was here for Harry and Meghan's wedding, I wouldn't miss it, I love the atmosphere".
Princess Eugenie's royal wedding: Harry and Meghan among guests
The princess has spoken of the importance of showing "people your scars" and is a patron of the Royal National Orthopaedic Hospital Appeal.
The dress features a fitted off-the-shoulder bodice with low back and full skirt draping beautifully into a flowing full length train behind her. Harry and Meghan's high-profile wedding in May was only one day. About 200 fewer individuals were invited to the Duke and Duchess' nuptials.
The dress code calls for a morning coat for male attendees and a day dress and hat for women.
The 71-year-old "hasn't forgotten" about Andrew "playing politics" when it came to his elder brother's relationship with her.
Britain's Princess Eugenie of York (C) walks up the aisle to marry Jack Brooksbank during their wedding ceremony in St George's Chapel, Windsor Castle. That's why Queen Elizabeth reportedly didn't see a need to give them an official title or dukedom. The fabric itself includes several meaningful motifs, including a Scottish thistle as a nod to Balmoral, an Irish shamrock (for Eugenie's maternal family), the York rose (for England) and ivy to represent the bride and groom's home.