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Looking like a royal, the heiress wore a Maison Valentino A-line gown, People reports, with an illusion high neck, and layers of laser-cut floral lace (so on-trend!). She's the picture of perfection with her slicked-back updo, cathedral-length veil, and an all-white bouquet.
Nicky has been spotted out and about in London the past few days celebrating this milestone.
First, two days ago, she and sister Paris were all dressed up for one of her many of pre-wedding parties. Nicky wore a long-sleeve lace mini with pink crystal embroidery along the waistline. The two sisters were excited to share this time with Nicky's future sister-in-law, Kate Rothschild.
Then, the next day, she had a lunch with Paris and Iraqi author Rena Sindi at the Arts Club in London's Mayfair neighborhood. This time, in a more modern laser-cut white shift.
And of course, last but not least, the most important even leading up to the wedding day itself — the rehearsal dinner!
Paris posted a photo from the rehearsal dinner of Nicky and James kissing in front of a cake with two heart toppers with their names drawn on them. "So happy that my sister found the man of her dreams. They make the perfect couple! So excited for their wedding today! #MrsRothschild," Paris wrote next to the photo.
After what must've been a whirlwind day, Nicky too, posted a photo from last night's pre-wedding dinner festivities. In an illusion-necked mini, this bride-to-be simply wrote "Goodnight" next to a picture of her holding her heels. Hopefully she got enough rest for her big day today.
We can't wait to get more details from what is undoubtedly her gorgeous day!