Prince William and Kate are herepublished at 10:42 British Summer Time 12 October 2018
The Duchess of Cambridge arrived with the duke. She was wearing a dress by Alexander McQueen and a Philip Treacy hat.
Princess Eugenie is Queen's granddaughter and ninth in line to the throne
She married Jack Brooksbank at St George's Chapel at Windsor Castle
Celebrities including Cara Delevingne and Robbie Williams were among 850 guests
Prince George was a page boy, and Princess Charlotte a bridesmaid
The couple invited 1,200 members of the public to watch the wedding
Cherry Wilson and Vanessa Barford
The Duchess of Cambridge arrived with the duke. She was wearing a dress by Alexander McQueen and a Philip Treacy hat.
Mike and Zara Tindall
The Duchess of Sussex, who arrived with Harry, was dressed in a navy dress and coat by Givenchy, and a hat by Noel Stewart.
Princess Eugenie was born with scoliosis and had surgery when she was 12 to correct curvature of the spine.
Jan Lehovsky, a surgeon at the Royal National Orthopaedic Hospital, was part of the team who operated on her and is among the wedding guests.
Princess Eugenie is now a patron of the hospital’s charity.
Quote Message“It’s an honour to be here. And it’s so important to have her involved with the charity. Most of the patients affected by scoliosis are young girls and she’s a real role model for them. She’s someone who can inspire them, which is so important for the young ladies coming through the surgery. Princess Eugenie shows them they can lead a normal life despite having this condition. It’s quite comforting for them and really lifts them.
X-Factor judges Robbie Williams and Ayda Field
Singer James Blunt and his wife Sofia Wellesley
Singer Ellie Goulding
The mother of the bride and sister Princess Beatrice are expected to arrive in 10 minutes.
You can't miss the supermodel as she arrives for the wedding. Her silver and black dress is pretty spectacular.
Our reporter Lauren Turner is among the crowd at Windsor Castle.
Quote MessageThere’s currently organ music playing as the guests arrive, with all the music having been chosen by the bride and groom. There are plenty of bright colourful outfits. Outside the castle, well wishers are cheering the arrival of coaches full of guests as they come past.
Check out those sunglasses.
Royal fan Joseph Afrane, from south London, is suited and booted for the royal wedding.
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It's going to be hard for many of the wedding guests to top this spectacular outfit today.
Royal fan Terry Hutt has dressed up in a Union Jack flag suit to celebrate the big day.
Hold on to your hats and skirts everyone....
Chelsy Davy arrives at Windsor Castle wearing a navy dress and matching hat.
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It's just been announced that Alex Bramall will be the official photographer for the wedding.
He previously photographed Princess Eugenie for Harper’s Bazaar US in 2016.
Mr Bramall said it was a "honour and privilege" to be invited to be the photographer.
"I look forward with great excitement to capturing this significant occasion and wish them both a happy future together.”
The BBC's royal correspondent Jonny Dymond writes...
It's cool and blustery at Windsor and outside the castle the crowds are pretty thin.
It's a far cry from the last royal wedding here when, by now, the pavements were jammed with people.
But there's still some time until the carriage ride, so people may be looking at the overcast skies and hedging their bets.
Inside St George's Chapel, autumnal flowers line the stalls of the Quire leading up to the altar.
Just one ring will be exchanged in today's ceremony - Jack Brooksbank will join Prince William in keeping his hand unadorned.
This is when we are expecting some of key arrivals:
Pixie Geldof and George Barnett
Comedian Jimmy Carr
Downton Abbey writer Julian Fellowes and his wife Emma Joy Kitchener