The stressed-out bride is not only said to have attacked poor Kate by insisting she was forbidden from arriving through the main entrance, but Eugenie's diva demands, fights with the wedding planners and blow out budget mean the event is swiftly turning into a disaster.
Other bridesmaids include Maud Windsor, 5, the daughter of Eugenie's goddaughter and the daughter of Lady Frederick Windsor and Lord Frederick Windsor, and Miss Theodora Williams, the daughter Ayda Field and "X Factor" host Robbie Williams.
As well as Charlotte, three, the other bridesmaids will be Peter and Autumn Phillips's daughters, Savannah, seven, ...
Kate Middleton Exudes Sophistication at Museum Exhibit Opening
The Cambridges have two older children - Prince George, five, and Princess Charlotte, three. Andrews in Scotland, added a brushstroke to artist Dairo Vargas' painting.
The statement from Buckingham Palace said Eugenie and Jack were "delighted" that Cabot was involved in the celebration of their nuptials.
Ten-year-old Viscount Severn and Lady Louise Mountbatten-Windsor, 14, will also be part of the wedding as special attendants.
Mr Brooksbank is a former manager of Mayfair club Mahiki and the couple met while skiing.
Following in the footsteps of the Duke and Duchess of Sussex, Eugenie and Jack have invited 1,200 people from across the United Kingdom to the grounds of Windsor Castle to share the experience of their special day.
The couple will then take a short carriage trip through Windsor, echoing that of Harry and Meghan when huge crowds turned out to watch.
Royalists in Australia will be able to view live coverage from inside St. George's Chapel from 7pm on Friday, October 12.