Nicky Hilton's Valentino Wedding Dress Is Absolutely Stunning

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This has to be one of the best celebrity wedding dresses we've ever seen.

Nicky Hilton looked gorgeous in a lacy, long-sleeved Valentino Couture wedding gown on Friday, as she stepped out of her London hotel headed to marry banking heir James Rothschild at Kensington Palace.

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PHOTOS: Beautiful Brides -- The Best Celebrity Wedding Dresses

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Check out the 31-year-old socialite's amazing train.

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Nicky had quite the hand in designing the gown as well. "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," she told Harper's Bazaar.


WATCH: Nicky Hilton Marries James Rothschild in Lavish Ceremony

"I went through every look from their collections over the last 10 years," she added. "I studied the archives, and I just sent notes about details I liked -- a certain sleeve, a high neckline."

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And the result -- six months later! -- is absolutely stunning: a custom couture gown with guipure lace, crystal embellishments, a balloon skirt and a nearly 10-foot train. The bride completed her look with a pair of white Christian Louboutins, inscribed with "Mrs. Rothschild."

WATCH: Oops! Nicky Hilton Bares Her Butt in Serious Versace Wardrobe Malfunction

Check out another memorable celebrity wedding dress -- Angelina Jolie's Versace gown when she married longtime love Brad Pitt last September -- in the video below.