Eugenie, 28, is the second daughter of Prince Andrew and Sarah, Duchess of York, and is ninth in line of succession to the British throne. Brooksbank is the European brand manager for Casamigos Tequila, the company co-founded by George Clooney.
Here's what you need to know about Princess Eugenie's wedding.
Wedding location: The wedding was held at St. George's Chapel at Windsor Castle. This is also where the wedding ceremony of Prince Harry and Meghan Markle took place in May.
A luncheon hosted by Queen Elizabeth at Windsor Castle will follow the wedding ceremony, with a black-tie reception taking place Friday evening at the Royal Lodge, People magazine reported. The celebration will continue Saturday, when a festival-like atmosphere, including a fairgrounds and food stalls, will entertain the newlyweds and their guests.
Who's attending: Approximately 800 guests were expected to attend the wedding, The Telegraph reported. The bride and groom invited 1,200 members of the public onto the grounds of Windsor Castle for the event. Eugenie's older sister, Princess Beatrice, was the maid of honor, and groom Brooksbank's brother, Thomas, was the best man, the royal family confirmed. Prince George and Princess Charlotte were among the pageboys and bridesmaids, the BBC reported.
Queen Elizabeth and Prince Philip, the latter who has been in frail health, were both in attendance, People magazine reported. Prince William and Kate Middleton and Prince Harry and Meghan Markle also were among the royal guests.
A notable absence was Camilla, Duchess of Cornwall. She cited previously scheduled engagements as her reason for not attending, People magazine reported.
Royal rift rumors: The absence of Camilla at Eugenie's wedding has stirred rumors of a royal rift. Camilla reportedly has a "frosty" relationship with Eugenie's parents, Prince Andrew and Sarah Ferguson, Express reported.
Who made Eugenie's dress: Eugenie wore a custom-made dress from London-based designers Peter Pilotto and Christopher De Vos, People magazine reported. The dress intentionally showed the scar on her back that Eugenie has from scoliosis surgery as a child. The fabric of her wedding gown contains motifs meaningful to the couple, People magazine reported. Eugenie followed tradition and wore a tiara on her wedding day.
Unconventional wedding cake: Eugenie made an unconventional choice for her wedding cake, opting for a chocolate and red velvet cake instead of the more traditional iced fruit cake, The Telegraph reported.
How to watch: The ceremony was livestreamed around the world via The Royal Family's YouTube channel. The livestream broadcast will also be available on Facebook and Twitter. Those who missed the live event can watch a recording of the entire ceremony on the royal family's YouTube channel.
WATCH ENTIRE CEREMONY ON YOUTUBE