Celebrities post pictures on social media from Princess Eugenie's royal wedding at Windsor Castle

Cara Delevingne, Demi Moore and Robbie Williams were among the star-studded crowd attending the Duke of York's daughter's big day

Princess Eugenie and Jack Brooksbank helped by Princess Beatrice and Prince Andrew, Duke of York leave Windsor Castle after their wedding for an evening reception at Royal Lodge on October 12, 2018 in Windsor, England. Getty Images

Britain's Princess Eugenie of York arrives with her father, Prince Andrew, Duke of York for her wedding ceremony. EPA

Britain's Princess Eugenie of York arrives with her father, Prince Andrew, Duke of York for her wedding ceremony. EPA

Britain's Princess Eugenie of York arrives with her father, Prince Andrew, Duke of York for her wedding ceremony. EPA

Britain's Queen Elizabeth and Prince Philip arrive. AP Photo

Britain's Princess Eugenie of York.

Royal supporters get into position outside of Windsor Castle ahead of the Royal wedding of Princess Eugenie of York and Mr Jack Brooksbank at St. George's Chapel in Windsor, England. Getty Images

Pixie Geldof and George Barnett arrive to attend the wedding. AFP

A guest loses his hat. AP Photo

British comedian Jimmy Carr, centre arrives with partner editor Karoline Copping, left. AFP

Security patrol ahead of the Royal wedding. AP Photo

Spectators wait in the grounds of the Castle. AFP

Britain's Princess Eugenie and Jack Brooksbank leave Windsor Castle a day ahead of their wedding in Windsor, Britain. Reuters

Crowds gather. Getty Images

Chelsy Davy, left, arrives for the wedding. AP Photo

Chelsy Davy, left, and other guests. AP Photo

Naomi Campbell. AP Photo

Tracey Emin, left. AP Photo

Royal fan Joseph Afrane from south London waves a flag as he waits for Britain's Princess Eugenie and her husband Jack Brooksbank to ride past in a horse-drawn carriage. EPA

Britain's Princess Eugenie of York (R) arrives accompanied by her father Prince Andrew, Duke of York, (L) arrives to attend the wedding to Jack Brooksbank at St George's Chapel, Windsor Castle, in Windsor, on October 12, 2018. / AFP / POOL / TOBY MELVILLE

Like the saying of how you wait ages for London buses and then two come along, followers of the UK royal family have now been treated to a couple of royal weddings in the space of one year.

Princess Eugenie, the granddaughter of Queen Elizabeth, was married on Friday to Jack Brooksbank, 32, at Windsor Castle - just months after her cousin Prince Harry tied the knot with Meghan Markle.

The Queen was in attendance, along with Prince Andrew (Eugenie's father), Prince William, wife Kate and children, and a smattering of celebrities who took to social media during the event.

Here's the best of the posts from the celebrity guests:

Cara Delevingne

The actress/model wore a suit and top hat, as social media users questioned whether she was the first woman to attend a royal wedding in such a striking attire.

She later posted an image, taken by actress Liv Tyler, on her Instagram of a scene with friends and family crashed out "post wedding".

Those in the image include sisters Poppy and Cara, plus Tyler's husband Dave Gardner.

Robbie Williams and Ayda Field

The former Take That popstar and his wife were looking sharp for the big day, having been dressed by Giorgio Armani.

She wished the bride and groom"a lifetime of happiness" as she followed up her earlier post with one of their outfits for the evening party.

Demi Moore

The Hollywood actress joined forces with designer Stella McCartney for her outfit, as the pair posed for a pre-wedding picture in London.

Moore then sent her a video after the wedding, saying thank you for "feeling so comfortable, and beautiful, like a princess" in her outfit.

Ricky Martin

The Latino singer wore a smart three-piece suit, though many on social media wondered how he made it on to the guest list with no obvious connection to the royal family.

Jack Whitehall and Jamie Redknapp

Comedian Whitehall and former England footballer Redknapp, both of whom are regulars on British TV, posed in front of Windsor Castle in their suits as Redknapp, recently divorced from popstar Louise, joked about his "plus 1" for the day.

Whitehall meanwhile complained about the behaviour of his hair during the event.

Liv Tyler

Another "power photo" from actress Liv Tyler, this time featuring supermodels Naomi Campbell and Kate Moss, plus Moss's daugher Lila and Demi Moore.

Tyler also sent her thanks to designer Stella McCartney for her outfit, as she posted an image of her posing with husband Dave Gardner.

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