The lavish wedding will kick off at 11am United Kingdom time on Friday in St. George's Chapel at Windsor Castle.
Robbie Williams' daughter Teddy has also been confirmed as a bridesmaid!
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.
Former "Take That" star Williams and Field are friends with Eugenie and her sister Princess Beatrice, and are expected to attend the wedding, British newspapers reported.
After years of keeping her distance, Sarah "Fergie" Ferguson will once again be reunited with the royal family of her ex-husband Prince Andrew as they all gather for her their daughter Eugenie's wedding.
Step aside, Harry and Meagan, it's time for a new royal couple to tie the knot.
Kate Middleton stuns in Erdem at the Victoria and Albert Museum
Another policy up for discussion is a declaration committing to putting mental health on an equal footing with physical health. William and Kate have always been involved in mental health initiatives through their Heads Together campaign.
On Wednesday, Buckingham Palace announced that the little royals, who last served royal duties during Prince Harry and Meghan Markle's May 19th ceremony, would be among the eight bridesmaids and page boys, all youngsters, to serve in Princess Eugenie's wedding to Jack Brooksbank on Friday, Oct. 12.
Princess Eugenie has also asked her goddaughter, Miss Maud Windsor, to be one of her bridesmaids.
Mia is the daughter of Mrs Zara Tindall and Mr Mike Tindall. They weren't included in Harry and Meghan's wedding so they're sure to be excited about the second royal wedding of the year.
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 Earl and Countess of Wessex's children, Lady Louise Windsor and Viscount Severn will be special attendants on the day.
Eugenie has given her family the centrestage at her wedding, with her cousin Peter's two daughter being enlisted as bridesmaids.
For Britain is still gaga over Markle, the glamorous USA actress who married the queen's grandson in a Windsor wedding watchedaround the world in May.