Nicky Hilton wore a $70K Valentino wedding gown for her wedding to billionaire James Rothschild on Friday (10.07.15).

The hotel heiress exchanged her vows at Kensington Palace's The Orangery in the haute couture dress, which designers Maria Grazia Chiuri and Pierpaolo Piccioli made from ''precious vintage lace'', ''three different tones of ivory'' and ''richly embellished crystals''.

The official Instagram for Valentino posted a description of the lavish wedding outfit.

They wrote: ''[The gown] was composed with three different tones of ivory and silver guipure richly embellished with crystals. The high neck bodice stitched to a precious balloon skirt ending with a three meter long train. Covered with a long veil is enriched all around the edge with a precious vintage lace (sic).''

Prior to the couple's big day Nicky - who is the sister of Paris Hilton - told of her dream to have Valentino design her dress and pinned the elite designer label as ''the definition of timeless''.

She previously said: ''Ever since I was a little girl I wanted Valentino to design my wedding dress. Valentino is the definition of timeless elegance, I don't think there's another couture house like it.''