The Duchess of Cambridge's sister Pippa Middleton has arrived at the church to marry one of the country's most eligible bachelors, millionaire groom James Matthews.
Miss Middleton was accompanied by her father, Michael, when they pulled up to St Mark's Church in the quiet Berkshire village of Englefield, shortly after 11.15am.
The bride wore a bespoke Giles Deacon dress, which was crafted to create the impression of being seamless.
The dress was teamed with a Stephen Jones veil, a Maidenhair Fern tiara, and Manolo Blahnik ivory satin shoes.
The groom, brother of former Made In Chelsea regular and reality television personality Spencer Matthews, arrived shortly before the bride.
The couple will say their vows in the picturesque church before a congregation which will include the Duke and Duchess of Cambridge, their children Prince George and Princess Charlotte, Prince Harry and other close family and friends.
The event has seen hundreds of royal fans, press and public descend on the quiet village, near Reading.
Guests included tennis champion Roger Federer and his wife, Mirka, who walked past 100 members of the waiting press and media camped out a short distance from the church.
Pippa's controversial uncle Gary Goldsmith said hello to the waiting press as he entered, while Princess Eugenie was among the first royals to arrive.
A few minutes before Pippa arrived in an open topped vintage car, as her father sat beside her, the page boys and bridesmaids were driven down from the Middletons' home, also in classic cars.
The groups of small children were gathered together at the entrance to the church by the Duchess and ushered inside.
The bride received a rousing cheer from around 100 royal fans and residents who had gathered close to the church to catch the guests arriving.
The proud father of the bride spent a few moments with his daughter at the church gate and they composed themselves before the ceremony began.
He then put her left hand on his arm and led her along the church path to the west door where her mother, Carol, was waiting.
Royal fans were disappointed as there was no Meghan Markle among the guests, with William and Harry arriving together on foot.
There is speculation she may make it to the wedding reception later being staged at the Middleton family home in nearby Bucklebury.