"Harry and Meghan invited her to their wedding ceremony, but it was very telling that she didn't get an invitation to their reception - and William and Kate didn't welcome her at all!"
Eugenie, ninth-in-line to the throne, works in the art world while her fiance, a former manager of popular London nightclub Mahiki, works in the drinks and hospitality industry.
The traditional "to obey" has been taken out.
The other bridesmaids will be: Savannah Philips, seven, the daughter of Autumn and Peter Phillips; Isla Philips, six, the youngest of the Phillips' daughters; Mia Tindall, four, the daughter of Zara Tindall and Mike Tindall;Maud Windsor, five and goddaughter of Princess Eugenie, and daughter of Lady Frederick Windsor and Lord Frederick Windsor.
Once the formalities are out of the way, the new husband and wife team will leave St George's Chapel - most likely treating the waiting crowd to a kiss on the West Steps.
Following the ceremony, the newlyweds will take part in a royal carriage procession through Windsor.
An information packet was distributed to those attending, asking guests not to bring presents, though Eugenie and Brooksbank have a wedding registry.
The couple, who exchanged vows in May at Windsor Castle, have spent their first few months as a married couple finding their feet in public life and developing celebrity friendships with A-listers like George and Amal Clooney.
Pinterest is a wedding planning staple for many brides.
A second, festival-inspired party will follow on Saturday.