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Nicky Hilton is married.

The 31-year-old wed banking heir James Rothschild, also 31, in a fairytale ceremony at London's Kensington palace on Friday.

As the hotel heiress left Claridge's Hotel to head to her wedding venue, Nicky showed off her incredible £50,000 Valentino gown.

The couture dress mainly consisted of lace material, which went from a high neckline to a lengthy train.

Nicky teamed the gown with a traditional veil under which her blonde hair was worn in a chic and classic updo.

She completed her wedding ensemble with delicate earrings and a bouquet of cream roses.

Nicky's older sister Paris Hilton accompanied her sibling as they left the hotel. In the role of bridesmaid, Paris, 35, wore a pale blue floor-length gown with a glittering belt and diamond necklace.

She wore her blonde hair in tumbling curls and pouted and posed as she got into her waiting car with mother Kathy Hilton, who was also in blue.

Celebrity guests at the ceremony include Lionel Richie, who is reported to be one of the musical entertainers at the reception.

Lionel's daughter Nicole is the former best friend of Nicky's sister Paris, and it's the families' friendship that is said to have swayed Lionel to perform.

Nicky began dating James, who has amassed a fortune worth an incredible $12 billion in 2011, after they met in Italy while attending model Petra Ecclestone's wedding to James Stunt.

Nicky was married once before, as she tied the knot with businessman Todd Andrew Meister at the Las Vegas Wedding Chapel in Nevada in 2014. The marriage was annulled three months later, with the former couple claiming they eloped on a whim.