Meghan Markle will mark her last night as a single woman with her mother at the five-star hotel Cliveden House on the night before the royal wedding.
Her closest friends will reportedly join them, including stylist Jessica Mulroney and designer Misha Noonoo.
She will also be accompanied by her bridal glam squad.
Following tradition, the groom will stay at the exclusive Coworth Park Hotel with his best man, Prince William.
The royal wedding countdown is officially on and it will be an early wake-up for American viewers who want to see the couple tie the knot.
Because of the time difference, it will be 4:30 a.m. on the East Coast as guests arrive at Saint George's Chapel at Windsor Castle.
Prince Harry will arrive with Prince William about an hour later.
The moment everyone's been waiting for, the appearance of Meghan Markle, will come at 7 a.m. ET.
At 8 a.m., onlookers will get their first glimpse of Markle and the prince as they embark around Windsor in a horse-drawn carriage to greet well-wishers hoping to catch a glimpse of the couple sharing a kiss.
Unlike Prince William and Kate Middleton's 2011 wedding, the couple will not pose on Buckingham Palace's famous balcony. Since Windsor Castle does not have a balcony, Prince Harry and his bride will not pose following the ceremony.
The couple will then return to Windsor Castle for their reception. They will also reportedly spend the night there.