Jack Brooksbank has asked his younger brother Thomas to be his Best Man at his Wedding to Princess Eugenie on Friday. The wedding will also be streamed on the Royal Family's YouTube, Facebook and Twitter, as well.
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.
Prince George, 5, and Louis de Givenchy, 6, will be page boys on the day.More news: Barkley returns for England, ready to live up to hopes
Louise is the 14-year-old daughter of Prince Edward and Sophie, Countess of Wessex, and thus Princess Eugenie's cousin.
Theodora, 6, is the child of American actress Ayda Field and English singer-songrwiter Robbie Williams.
Eugenie and Jack will marry at St. George's Chapel at Windsor Castle on Friday, October 12.
The couple, who initially met after being introduced by friends while Eugenie was still at Newcastle University in Verbier, Switzerland, will walk down the aisle at St George's Chapel, the very spot where the Duke and Duchess of Sussex tied the knot in May.More news: Jimmy Butler has heated practice with Timberwolves
It has already been announced that 1,200 members of the public have been invited into the grounds of Windsor Castle for the wedding.
The Princess of York's ring is a large pink padparadscha sapphire surrounded by 10 perfectly cut diamonds with two cut diamonds at the shoulders, while the Duchess of Cambridge's ring has a large royal blue sapphire, which is also surrounded by diamonds, Mirror News reports.
"I know it seems odd that Camilla's missing Eugenie's wedding but it doesn't indicate any malice or ill-feeling".More news: China Foreign-Currency Reserves Drop on Trade Tensions, Yuan