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.
Sarah Ferguson and Prince Andrew's youngest daughter will tie the knot to her longterm boyfriend Mr Brooksbank at St George's Chapel in Windsor on Friday - just five months after Harry Wednesday Meghan Markle in the same place.
Savannah is the 7-year-old daughter of Autumn and Peter Philips (the daughter-in-law and son, respectively, of Princess Anne).
Many reported Jack would be granted the title, Earl of Northallerton, which is now vacant, upon marrying Eugenie, but palace sources have revealed the royal family may decide not to give him one.
The pictures coincided with the announcement of the bridal party.
Eugenie, 28, younger daughter of Prince Andrew and his ex-wife Sarah Ferguson, the Duchess of York, will marry Brooksbank, 32, at the queen's Windsor Castle home, west of London.
Mia is the 4-year-old daughter of Zara and Mike Tindall (the daughter and son-in-law of Princess Anne, respectively).
Unlike her cousins Prince William, and Prince Harry, Eugenie has never been a "working royal". Royal Wedding fever is well and truly in the air and fans can't wait to see the couple marry at St George's Chapel in Windsor where the bride grew up.
Earlier this week, Eugenie posted a photo on Instagram of her and Beatrice as bridesmaids with the caption #tbt sisterly love.
Similar to the Duke and Duchess of Sussex, the couple will invite more than 1,000 members of the public into the grounds of Windsor Castle to join their celebrations.
Meghan places her left hand on Prince Harry's right hand, again showing her engagement ring, as they both look at the photographer.
Camilla is scheduled to visit a school in Scotland on the day of Princess Eugenie's wedding, according to reports.