Meghan Markle has departed Cliveden House Hotel in Taplow -- where she spent her final night as a single woman with her mother, Doria Ragland.
The pair are driving in a Rolls Royce, with the journey expected to take around 25 minutes.
By Meg Wagner and Lauren Said-Moorhouse, CNN
Meghan Markle has departed Cliveden House Hotel in Taplow -- where she spent her final night as a single woman with her mother, Doria Ragland.
The pair are driving in a Rolls Royce, with the journey expected to take around 25 minutes.
Serena Williams, a close friend of Meghan Markle, is in the chapel.
She's sitting in the Quire, the section that appears to be for family and other close friends. Oprah Winfrey is in that section, too.
Earlier today, Williams tweeted photos of her Versace outfit:
Actors Tom Hardy and Charlotte Riley are arriving for the wedding ceremony of Prince Harry and Meghan Markle.
British royal weddings are usually grand affairs of state, where presidents and prime ministers rub shoulders with obscure European monarchs.
This isn't the case today in Windsor: Prince Harry and Meghan Markle opted not to invite political leaders to the event — unless they are friends of the couple.
One of those invited in a personal capacity is former British Prime Minister John Major, who was guardian to Prince Harry after his mother, Diana, died in 1997.
As expected, several of Meghan's co-stars from "Suits" are in attendance. Her on-screen husband, actor Patrick J. Adams, has arrived to the chapel as well as Gabriel Macht, who plays Harvey Specter.
Several minutes earlier, Abigail Spencer, Sarah Rafferty and Gina Torres arrived.
Indian actress and winner of Miss World 2000, Priyanka Chopra, is arriving at the chapel wearing a gray Vivienne Westwood dress and, like Oprah, a Philip Treacy hat.
From CNN's Judith Vonberg
Meghan Markle will be joined today by six bridesmaids, including 3-year-old Princess Charlotte, daughter of the Duke and Duchess of Cambridge.
The youngest of the bridesmaids and page boys — chosen by Prince Harry and Markle — is 2 and the oldest is 7, Kensington Palace announced Wednesday.
Along with Princess Charlotte, the bridesmaids include...
The four page boys are...
Appearing to make a somewhat sneaky entrance, Elton John is inside St. George's Chapel with husband David Furnish talking to the Beckhams and James Blunt.
He's wearing his trademark round sunglasses with a morning suit and blue tie.
From CNN's Laura Smith-Spark
When Prince Harry and Meghan Markle tie the knot today, there's one person whose absence will be keenly felt: Diana, Princess of Wales.
But small details in the planning of the wedding make it clear that Harry wants his beloved mother's presence to be felt.