Kate Middleton has revealed she's "a bit worried" about how Prince George and Princess Charlotte will behave at her sister Pippa Middleton's wedding to James Matthews this weekend.
The Duchess of Cambridge appeared at Britain's Queen Elizabeth's first royal garden party of the season at Buckingham Palace on Tuesday, where she was joined by other key members of the royal family.
The mother-of-two was joined by her husband Prince William, Princess Beatrice for the occasion and one of the guests Andrew Bates and his wife Janet, chatted to Kate as she mingled with guests.
Mr Bates asked the 35-year-old how she was feeling about her sister's pending nuptials, where George and Charlotte will play starring roles as page boy and junior bridesmaid.
Pippa will exchange vows with her boyfriend of less than two years at St Mark's church in Englefield, near the Middleton family home in Bucklebury in a celebration rumoured to be costing €350,000.
"She said that they were all really looking forward to her sister's wedding at the weekend but she was a bit worried about how her children might behave," Mr Bates told the Press Association.
"She said she was hopeful that they would be good but you never know at that age."
Pippa might only be royal by association, but her nuptials are shaping up to be a princess-worthy affair from the guestlist to the decor.
While it's still unclear what kind of role, if any, Kate will play during her sister's big day (experts predict she won't return the favour of maid of honour so as to avoid stealing the spotlight from the bride), she will be front and centre with her family, while her brother-in-law Prince Harry will also be in attendance and is rumoured to be making his first official appearance with girlfriend Meghan Markle on the day.
Much has been made of the fact that Pippa's 'no ring, no bring' rule means Markle would be denied an invite, but sources are saying that now an exception has been made for her. And yes, Harry and Meghan have been pictured together in recent months - this would be the first occasion a long lens camera isn't involved.
Fresh pictures are emerging of the €110,000 marquee set up on the Middleton estate, which she reportedly had shipped from Belgium contributing to the six figure price tag.
The bride-to-be, who will marry her 41-year-old hedge fund boss fiancé this weekend, has been making the most of her downtime in the run up to her big day - she was spotted leaving the plush Santi Spa in Kensington.