Having announced their engagement in January this year, Princess Eugenie will be getting wed to Jack Brooksbank after dating for seven years.
Yesterday, the royal family also officially announced that 1,200 members of the public will be invited inside the grounds of Windsor Castle for the wedding, where they'll be able to watch the celebrations unfold.
It is set to take place at St George's Chapel - the same place Prince Harry and Meghan Markle got married in May.
Princess Eugenie and Jack Brooksbank would like to invite members of the public to join their wedding on 12 October, 2018, to attend inside the Precincts of Windsor Castle. Members of the public who would like to attend can fill in an application form (for more information see the link in our bio on our profile page). 1,200 members of the public will be able to view the arrival of the congregation and Members of the Royal Family, listen to a live broadcast of the Marriage Service and watch the start of the procession as the couple depart at the end of the Wedding ceremony.
To stand a chance to be one of the 1,200 guests, members of the public must submit their details to a ballot by 8 August.
Also invited to the royal wedding are representatives of charities supported by the couple, members of the community in Windsor, and children from schools that Princess Eugenie attended.
The princess, who is ninth in line to the throne, will keep her royal title when she marries, with the option of taking on her husband's surname.
Like Prince Harry and Meghan Markle, the newest royal couple will also ride through Windsor in a carriage.
Princess Eugenie, who works as a director at gallery Hauser and Wirth, is the second daughter of Prince Andrew and Sarah, Duchess of York.
Mr Brooksbank is a former manager of Mayfair club Mahiki and the couple met while skiing in the Swiss resort of Verbier.
The two got engaged after Mr Brooksbank asked for her hand in front of a volcano at sunset in Nicaragua in January.