Eugenie, 28, and Brooksbank, 32, tied the knot in St. George's Chapel at Windsor Castle where Prince Harry and Meghan Markle were married less than six months ago.

The bride's father, Prince Andrew, and mother, Sarah Ferguson, the Duchess of York, were in attendance, as well as the Duke and Duchess of Sussex and the Duke and Duchess of Cambridge.

Plenty of actors, singers and models also turned out to celebrate the couple's big day.

HAPPENING NOW: Guests arrive for #RoyalWedding of Princess Eugenie and Jack Brooksbank in Windsor, England. https://t.co/GfyC3B3ccP https://t.co/uvGutwdAYX

— ABC News (@ABC) October 12, 2018

Demi Moore

Wearing a maroon dress, the famed actress attended the event, as she is friends with Eugenie’s parents.

Demi Moore, Naomi Campbell, Robbie Williams, Ayda Field and Cara Delevingne arrive ahead of the wedding of Princess Eugenie of York to Jack Brooksbank at Windsor Castle.#RoyalWedding #RoyalWedding2 pic.twitter.com/qJckuIv1n3

— E D W A R D (@EdwardWJSmith) October 12, 2018

Cara Delevigne

The actress and model looked dapper in a tux and top hat, adding a little style to the classic look.

\"PHOTO:
Adrian Dennis/ Pool via Reuters
PHOTO: British model Cara Delevingne arrives to attend the wedding of Britain's Princess Eugenie of York to Jack Brooksbank at St George's Chapel, Windsor Castle, in Windsor, Britain, Oct. 12, 2018.
>

Cara Delevingne is wearing top hat and tails. This is everything I didn’t know I needed ???????? #RoyalWedding pic.twitter.com/9YiZCukMMP

— Emma Fraser (@frazbelina) October 12, 2018

Naomi Campbell

Delevigne wasn't the only model in attendance -- the legendary Campbell wowed in a black and silver dress that stood out so much, it may have stolen the show.

\"PHOTO:
REX via Shutterstock
PHOTO: Naomi Campbell arrives at The wedding of Princess Eugenie and Jack Brooksbank, Windsor, Berkshire, Oct. 12, 2018.
>

Kate Moss

The British fashion icon wore a white suit with black polka dots.

\"PHOTO:
Matt Crossick/Pool via Reuters
PHOTO: Kate Moss and Lila Grace Moss Hack, right, arrive for the wedding of Princess Eugenie to Jack Brooksbank at St George's Chapel in Windsor Castle, Britain, Oct. 12, 2018.
>

#KateMoss is among the first guests to arrive at #PrincessEugenie and Jack Brooksbank's #RoyalWedding! pic.twitter.com/R64NRpd9TF

— InStyle (@InStyle) October 12, 2018

Robbie Williams

The British singer was outshined by his gorgeous wife, Ayda Field, who looked stunning in a cream suit.

WATCH: Robbie Williams and Ayda Field arrive at the #RoyalWedding of Princess Eugenie and Jack Brooksbank pic.twitter.com/poxGmgwCFu

— TicToc by Bloomberg (@tictoc) October 12, 2018

Liv Tyler

The \"Armageddon\" actress rocked a navy suit to the nuptials.

Oh hey, @LivTyler! ?? Guests are beginning to arrive at #PrincessEugenie and Jack Brooksbank's #RoyalWedding. pic.twitter.com/bE8Hq4ll3j

— InStyle (@InStyle) October 12, 2018

Ricky Martin

The \"Livin' La Vida Loca\" singer was certainly living his best life, looking ageless in a classic suit and blue tie.

Oh, Ricky Martin’s arrived.... sigh. ??#RoyalWedding pic.twitter.com/073KE2VvBt

— James Garner (@mrjamesgarner) October 12, 2018
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