Lady Gabriella's wedding is the first royal event Beatrice and Edo have been pictured attending together as a couple.
They arrived with Beatrice's mum, Sarah Ferguson, who waved at crowds as they made their way to the chapel.
Fergie certainly seems to approve of her eldest daughter's relationship with the property millionaire, and she was all smiles throughout the day.
Beatrice and Edo reportedly met at Prince Harry and Meghan Markle’s wedding last year – so today's ceremony in the same chapel will be nostalgic for the pair – although their parents have been friends for years.
Edo, a divorcee with a two-year-old son, and Beatrice were said to have “hit it off instantly”.
With so many royals in attendance at Lady Gabriella's wedding - including the Queen and Prince Harry - Edo is sure to have the royal seal of approval.
Meghan Markle, who recently gave birth to baby Archie, didn't attend the nuptials.