But when it came to their official wedding portraits, the two cousins could not have adopted a more different approach.
Eugenie is the granddaughter of Queen Elizabeth II and ninth in line to the British throne. Brooksbank, who works as a brand ambassador for Casamigos tequila, proposed to Eugenie, an art gallery director, last winter.
The wedding was attended by more than 850 guests which amongst them were celebs like Cara Delevinge and X Factor judges Robbie Williams and Ayda Field. But, it probably wasn't nanny Maria Teresa Turrion Borrallo because she usually helps with Prince George and Princess Charlotte, who stole the show Friday as members of the bridal party. There was no sign of 5-month-old Prince Louis, William and Kate's youngest child.
Wearing a Zac Posen gown, Eugenie looks lovingly at her new husband, who is smiling at the camera and holding her hand.
A wedding is a attractive thing. Next to the Queen is her husband, Prince Philip.
European royal Yoanna enjoyed her stay at the luxury five star Coworth Park hotel, in Ascot, after the evening reception.
The dean of Windsor, David Conner, led the vows. For some, even that did not go down well.
Twitter was also rife with criticism about the cost of the affair.
And now, couture designer Sam Dougal - of design house Gainsbourg - has shared a video on Instagram, showing a completely unexpected and fresh royal wedding aesthetic worn by the Princess.
Security around Windsor was tight, with airport-style checks and a heavy police presence. The exact cost was not immediately released, but news reports estimated it at about $2.6 million.
It adds: "From the Princess's dress, created to show the faint silvery scar of a life-changing childhood operation, to the fond family speeches, the steadfast young couple were the picture of unshowy devotion".
After being diagnosed with the condition at age 12, Eugenie said, she underwent an eight-hour surgery during which "surgeons inserted 8-inch titanium rods" into each side of her spine and "one-and-a-half-inch screws" at the top of her neck. "It was her scar".
The event also had moments of levity. It's a simple party dress with a modern jacket.