Princess Eugenie and tequila executive Jack Brooksbank are officially married The Queen's granddaughter wore a gown by British-based designers Peter Pilotto and Christopher De Vos She also borrowed a diamond and emerald tiara from the Queen Eugenie's sister, princess Beatrice, was the maid of honour The two are the daughters of Prince Andrew and Sarah Ferguson The Queen and other members of the royal family all attended Models Naomi Campbell and Cara Delevingne, and actress Demi Moore were some of the celebrity guests Princess Eugenie is ninth in line to the throne The couple had a lavish affair at Windsor Castle And took a horse-drawn carriage ride through parts of the city