ROBBIE Williams leapt up on stage to perform for Eugenie and Jack at their star-studded Windsor wedding bash last night.

The Angels singer, 44, worked through some of his greatest hits for the 850 A-listers, Royals and pals gathered at a grand marquee for what was described as a "hell of a bash".

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Decadent floral displays commissioned by the bride's parents Prince Andrew and Fergie and designed by wedding florist Ron Van Helden framed the festivities.

And there is likely to be sore heads this morning thanks to a drinks menu curated by the groom using his knowledge as a former nightclub manager — and included George Clooney's tequila brand Casamigo for which Mr Brooksbank is a brand ambassador.

Guests kicked off two days of partying in style by showing off their stunning outfits and flouting a social media ban to take secret snaps of the big day.

Stars including Kate Moss, Cara Delevingne, Jack Whitehall, Ricky Martin, Jamie Redknapp and Oliver Proudlock all shared snaps from the event.

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They were told to expect “one hell of a party” last night as they toasted the newly-married Royal couple.

The bash - expected to last two days - kicked off after an afternoon reception in Windsor Castle’s St George’s Hall which was hosted by the Queen.

The festivities were held in the gardens of The Royal Lodge in Windsor Great Park — the family home of the Duke of York Andre.

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A fairground was set up in the garden including a Ferris wheel, dodgems and a coconut shy.

The wild blowout last night is today being followed by a “more relaxed” all-day party.

Today's festivities are expected to have a “festival vibe” and will feature the same family-friendly activities enjoyed at the afternoon reception yesterday.

A source told the : “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.”

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The eye-watering bill for the weekend of fun is being paid for by The Queen and Prince Andrew out of their own funds, the Palace said.

The ninth-in-line to the throne married her long-term boyfriend in a romantic ceremony at St George's Chapel in front of 850 A-list guests.

On their way to last night's ball Eugenie and her new husband Jack Brooksbank left their fairy tale wedding in James Bond's Aston Martin.

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What Prince Andrew said at the reception

THE father of the bride Prince Andrew is said to have hit the right note with his speech during the reception – and broke with royal tradition.

The Duke of York delivered a rip-roaring anecdote as he remembered the time when he shouted at the family dog, called Jack, to get off a chair.

The Prince said: “The dog didn't move but Jack Brooksbank shot up and fled,” according to Anthony Wallersteiner, the groom’s old headmaster.

Earlier the Prince, 58, said: "I don't write speeches, why should I write this one?"

Andrew also reportedly broke protocol by turning around to hug Jack - and spoke of being a dad to Eugenie and older daughter, Princess Beatrice.

Mr Wallersteiner said: “The Duke has been a naval officer for 22 years and imagined he was very organised.

"But he said when it came to clearing out his girls' bedrooms he had something to learn.

"He said he didn’t realise Ken and Barbie’s relationship was so complex.

"And he didn’t realise first that Barbie had quite so many outfits and secondly that Ken didn’t seem to have any clothes at all."

And after their lavish ceremony, the pair left Windsor in a silver Aston Martin — which was originally made for the James Bond movie Spectre.

The bride was clearly surprised — as she gawped and said "wow" when she spotted the luxury DB10 Aston Martin.

Eight models were made for the spy movie, with Jack's new father-in-law Prince Andrew joking "no pressure" as the couple drove off.

It was the final public show for the couple before they headed to their reception the at York family home, Royal Lodge in Windsor Great Park — after their wedding was sealed with a kiss outside the St George's Chapel.

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The fun-filled reception comes after the groom himself was left tearful as he watched his beautiful bride walk down the aisle.

Jack Brooksbank couldn't take his eyes off Princess Eugenie, appearing to tell her "you look perfect".

The 32-year-old appeared to be teary-eyed as he met the princess at the altar, with lip-readers saying he told the 28-year-old: "Oh... my heart... Oh break my heart".