The flower arrangements displayed during the Wedding Reception for Princess Eugenie and Jack Brooksbank last Friday at Windsor Castle were created using autumnal foliage from Windsor Great Park and biodegradable oasis, following The Couple’s autumnal theme and eco-friendly request. Thank you @simonlycett, @paulthomasflowers, John Plested, @hilliergarden, and @davidaustinweddingroses for creating the beautiful arrangements.
Eugenie's father, Prince Andrew, shared a number of photos to his Instagram on Wednesday featuring the floral arrangements at Friday night's reception at Windsor Castle, giving royal fans a behind-the-scenes glimpse of the venue for the exclusive after-party.
The flowers were "created using autumnal foliage from Windsor Great Park and biodegradable oasis, following the couple's autumnal theme and eco-friendly request," the post stated.
Featuring leaves and flowers in shades of yellows, oranges and reds, the arrangements provided a gorgeous accent to the castle's features, both in giant vases and as table decoration.
Robbie Williams—whose 6-year-old daughter Theodora served as one of the adorable bridesmaids—performed for the guests at the evening reception, singing his hit song "Angels" as well as some classic pop numbers "from different artists that the crowd sang along to," a source at the party tells PEOPLE.
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A gourmet pizza truck provided food and Casamigos margaritas was the cocktail of choice. After all, Jack works as a brand manager for the tequila brand started by George Clooney and Rande Gerber before they sold the company for $1 billion last year.
But the party didn't end there. The celebrations continued Saturday with a festival-style event complete with a fairground of carnival games, a merry-go-round, a ferris wheel and food stalls at Windsor Great Park.