The royal maid of honor has arrived!

Princess Beatricearrived at the royal wedding of her sisterPrincess EugenietoJack Brooksbankalongside her mother,Sarah Ferguson, the Duchess of York, at St. George’s Chapel in Windsor Castle on Friday.

Eugenie, 28, revealed Beatrice would be her maid of honorin an interview with BritishVoguein August. “Euge is amazing,” Beatrice said, adding, “She’s a very modern bride.”

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Eugenie and Jack exchanged vows at St. George’s Chapel — thesame venuewhere Eugenie’s cousinPrince HarrywedMeghan Marklein May.

Princess Eugenie wedding

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Around 800 guests attended Friday’s celebration, withseveral celebrities— includingNaomi Campbell,Cara Delevingneand Ellie Goulding — in attendance.

Princess Eugenie/Instagram

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On Saturday, the party will continue with a festival-style event complete with a fairground and food stalls. Despite claims that the Queen’s cousin, party planner Lady Elizabeth Anson, was involved in the castle reception on Friday, a source told PEOPLE that it’s the couple who are “running the show,” as a friend put it. “It is Eugenie and Jack’s party and they are very much involved in all the details and decisions,” the source added.

source: people.com