Princess Eugenie marry Jack Brooksbank at St. George's Chapel on Friday October 12, but Prince Harry and Meghan Markle might be missing from part of the celebrations due to their royal tour of Australia.
Eugenie and Jack's royal wedding coverage will begin from 7pm AEDT at Windsor Castle, before the royal family and celebrity guests attend a lunch hosted by Queen Elizabeth at Windsor Castle and then a black tie evening reception at Royal Lodge.
However, the newlyweds will continue the celebrations into the next day with a festival-style event complete with a fairground and food stalls.
But it looks like Harry and Meghan will have to skip Saturday's party as their first royal tour kicks off in Sydney, Australia on October 16. More about their tour here.
Camilla, Duchess of Cornwall will also be missing Eugenie's wedding as she had already had a "long-standing invitation" when the wedding date was set.
Channel 7 will be airing Eugenie's wedding live from 7pm tonight, as the only Australian broadcaster with cameras in the Chapel. For more info.