The couple has also asked Princess Beatrice, Eugenie's older sister, to be her Maid of Honour, while Thomas Brooksbank, Jack's brother, will be best man. Accompanying the news were several sweet throwback photos of the couple and their siblings to mark the special occasion.
The visit was arranged before Eugenie set a date for her wedding, and the Duchess of Cornwall doesn't want to let down the children who have been hoping to meet her.
Princess Eugenie's big day is nearly here!
Savannah is the 7-year-old daughter of Autumn and Peter Philips (the daughter-in-law and son, respectively, of Princess Anne).
The only non-royal bridesmaid will be Theodora Williams - the six-year-old daughter of Robbie Williams and Ayda Field.
"When Camilla gets together with Beatrice and Eugenie she joins in the talk about how trashy and common Meghan and Kate's lineage is", a palace insider explosively tells. Princess Eugenie is godmother to Maud.
Two other members of the royal family will serve as Special Attendants: the Earl and Countess of Wessex's daughter, Lady Louise, 14, and her brother James, Viscount Severn, ten. Mr Brooksbank is now manager of Mahiki, a nightclub in Mayfair but before that, he worked at Chelsea's Admiral Codrington pub, then the Markham Inn.
Eugenie and Jack will marry at St. George's Chapel at Windsor Castle on Friday, October 12.