- Eugenie, 28, opted for custom-made pink jacket by designer Sam Dougal
- The biker jacket was teamed with a bespoke white mini dress underneath
- Guests including Robbie Williams and Tamara Beckwith shared snaps from bash
Princess Eugenie wore a personalised 'Mrs Brooksbank' jacket with a white mini dress for a second day of wedding celebrations on Saturday.
Eugenie, 28, opted for a custom-made pink tailored jacket by designer Sam Dougal for the funfair-themed bash in the grounds of the Royal Lodge in Windsor, featuring her married name on the back in silver beads - in her own handwriting.
The biker jacket was teamed with a bespoke white mini dress underneath, also created by Dougal - which was a far more relaxed look compared to her stunning wedding gown by Peter Pilotto and Christopher De Vos.
It was also a much less formal than the Hollywood-inspired pale pink gown by Zac Posen that Eugenie wore for the private black-tie dinner at the Royal Lodge on Friday night.
It is understood Eugenie and new husband Jack Brooksbank, 32, will not be getting new titles following their wedding - meaning Prince Andrew's daughter will become known as HRH Princess Eugenie, Mrs Jack Brooksbank.
Guest credited Sarah Ferguson for the lavish bash at the Royal Lodge, with socialite Tamara Beckwith posting: '#thankyou @sarahferguson15 For having no boundaries when it comes to letting your incredible imagination run riot.
Eugenie, 28, opted for a far less formal ensemble for her funfair themed party on Saturday night, after wearing a Hollywood-inspired pale pink gown by Zac Posen for the private black-tie dinner on Friday (above, with husband Jack)
She added: 'Well that was WoW... a mini mWhile photographs of the couple at the star-studded bash are yet to emerge, the bride picked a more daring look for her second party.
Dougal, who is the co-founder of label Gainsborough, shared a sneak-peek of the pale pink jacket on Instagram stories following the bash.
Zoe De Givenchy, the mother of page boy Louis, also shared snaps of her and her daughter enjoying the carousel during the second day of festivities arathon.. Met so many fabulous 30 year olds..! Way too much tequila! A truly inclusive Wedding.. Thank you'.
Eugenie and Jack partied with a whole host of A-list friends for a second night at the Royal Lodge, the York's family home, on Saturday.
Discussing the party look with Harper's Bazaar, Dougal said: 'The look is an exciting and unusual one for a royal wedding, and had to go with the feel of the day.
'Much like Eugenie, the look is totally unique, and full of fun. It's a simple party dress with a modern jacket.'
He added: '[T]o imagine a royal bride in a biker jacket celebrating her wedding at Windsor Castle – it's fun and unexpected.'
Eugenie previously wore a blue high-neck dress by Dougal, who previously worked for Alexander McQueen, at Prince Harry and Meghan's wedding at St George's Chapel in May.
Saturday's festivities saw Ellie Goulding performing in front of guests, including Robbie Williams and wife Ayda Fields, as well as Pixie Geldof and heiress Hayley Bloomingdale.
Zoe de Givenchy, the mother of page boy Louis, also shared snaps of herself and her daughter enjoying the festivities.
Irene Forte posted a picture of a fairground ride on Instagram with fellow guests Marissa Montgomery and Saloni Lodha, while Olympia Greece also showed off the merry-go-round entertainment to their Instagram followers.
Made In Chelsea's Ollie Proudlock, who attended with his fiancée Emma Louise Connolly, wore a scarf embroidered with pictures of Eugenie and her new husband especially for the occasion.
Comedian Jack Whitehall also posted footage of guests letting their hair down in a marquee as royal wedding guests flouted a social media ban from the party at the Royal Lodge Windsor.
Prince Andrew and Sarah, the Duchess of York, brought in the company who helped plan the Beckhams' reception for the bash.
One source said: 'There will be dodgems and funfair rides, coconut shies, lots of food stalls, loads of cocktails, bloody Marys for the hangovers and a festival vibe'.
Meanwhile, the family's gardener said: 'The setup looks amazing so I'm sure it will be one hell of a party.'
The Queen and the Duke of York have paid for Eugenie and Jack's three wedding parties from their own funds, the Palace has said.