Mr Brooksbank has asked his brother, Thomas Brooksbank, to be his best man, while Eugenie's older sister Princess Beatrice will be her maid of honour.
She has also asked Robbie and Ayda Williams' daughter Theodora, six, to be a bridesmaid.
'It has been lovely working with Princess Eugenie and Jack and I really hope they enjoy the cake on the day'.
Princess Eugenie of York, 28, along with her 30-year-old sister Beatrice, are by contrast unhappily famous for wearing peculiar hats.
The cake itself is still very much under wraps.but the baker behind Princess Eugenie and Jack Brooksbank's wedding cake has offered royal fans a few tantalising glimpses of what might be unveiled when the pair Wednesday on Friday.
The Beckhams may be back for their second royal wedding this year, too.
Buckingham Palace has announced that Robbie's six-year-old daughter Theodora Williams - whose mother is Ayda Field - is among the wedding party when the British royal ties the knot with her fiancé Jack Brooksbank this Friday at St George's Chapel in Windsor Castle.
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"She's also been banned from making a speech, as much as Eugenie would have liked her to, out of fear she may say something untoward or make subtle digs at the family", A palace aide told the publication.
Their newborn baby brother Louis, born in March, sat out Harry and Meghan's wedding and likely will not be attending Eugenie's wedding either.
Mia is the 4-year-old daughter of Zara and Mike Tindall (the daughter and son-in-law of Princess Anne, respectively).
Queen Elizabeth's youngest grandchildren, Lady Louise Mountbatten-Windsor, 14, and Viscount Severn, 10, will serve as "special attendants".
The couple will then take a short carriage trip through Windsor, echoing that of Harry and Meghan when huge crowds turned out to watch.
But the selfies are a far cry from the slick and professional photos that were relased by the Duke and Duchess of Sussex in the lead up to their Royal Wedding.