According to the Mail Online, the event will take place at Houghton Hall, an estate belonging to David Cholmondeley, 7th Marquess of Cholmondeley, on June 22. Prices for the tickets start at £6,000 and can go up to £10,000.
Guests will be treated to a champagne reception, jazz music, a lecture by writer Anthony Horowitz, food prepared by top chefs suchas Tom Kerridge, and a magician.
The publication added that guests who pay £10,000 will get an invitation to stay at Houghton with the Marquess and Marchioness of Cholmondeley after the party.
Princess Charlotte and Prince George’s mother has been the Royal Patron of East Anglia’s Children’s Hospices since January 2012.
Last year, the 34-year-old royal penned a touching letter in support of Children’s Hospice Week.
“For families of children with life-limiting conditions, every moment is precious and every memory needs to be cherished and celebrated,” the letter read. “Children’s hospices strive to create happy moments in the most difficult times any family could face. I hope you will join me in supporting Children’s Hospice Week and work to make every moment count for all of our families.”