Princess Eugenie, 28, the Queen’s sixth grandchild, tied the knot with wine merchant fiancé Jack Brooksbank today.
The Duke and Duchess of Cambridge shared an adorable moment as they arrived for the wedding on Friday.
One Twitter user said Kate and Will were trying to “upstage Harry and Meghan’s PDA” at theevent.
ABC reporter Kirsten Aiken wrote on Twitter: “Commentary team oohs and aahs over an apparently rare PDA by William and Kate (mind you, they’re only holding hands!) ahead ofWedding.”
Guests at the wedding include Kate Moss, Demi Moore and Naomi Campbell among other A-List arrivals.
Windsor was expected to escape the worst of Storm Callum, but conditions were very blustery as the guests arrived, with many holding on to their hats.
One man was even spotted chasing after a fellow guest’s hat as it blew off and rolled along the ground.
The gothic chapel was filled with autumnal flowers, chosen by Eugenie to evoke the rich and vibrant tones of the season.
In Windsor town, royals fan keen to catch a glimpse of the bride and groom noted it was quieter than for Harry and Meghan’s high-profile nuptials at the same venue in May.
Kerry Evans, 54, from Lincolnshire, has been in the crowds of bothweddings this year.
She said: “I wanted to be part of the wedding and the traditions because it’s all part of being British.
“I thought there would be lots of people arriving but there aren’t, I’ve been waiting and waiting.”
Eugenie and Jack, who started dating in 2010, married at the same venue as Prince Harry and Meghan Markle.
There will be a reception after the marriage in the Windsor grounds, which will comprise a funfair and festival-themed party day.
Over 850 guests have been invited to the ceremony – more than St George’s chapel 800 person capacity allows.
The celebration will last for two days, with the second day more casual and a high celebrity turn-out expected.