She beat her older brother George, eight, to the top spot as he was estimated to have a net worth of £2.1billion, according to the study from Electric Rides on Cars.
Princess Charlotte and Prince George’s younger sibling Louis, three, apparently has a net worth of £720million.
He came in joint third place with Beyonce and Jay-Z’s daughter Blue Ivy Carter, nine.
Prince Harry and Meghan Markle’s son Archie Mountbatten-Windsor was estimated to have a net worth of £21.6million, according to the latest figures. He was named 11th in the study among the famous offspring.
Tom Cruise and Katie Holmes’ daughter Suri was named in the fifth spot while Kylie Kardashian and Travis Scott’s daughter Stormi Webster was placed in the sixth spot.
RICH KIDS 2021, research by Electric Rides on Cars
1. Princess Charlotte of Cambridge
2. Prince George of Cambridge
3. Blue Ivy Carter
4. Louis of Cambridge
5. Suri Cruise
6. Stormi Webster
7. Vivienne & Knox Jolie-Pitt
8. Max & Emme Maribel Muñiz
9. Taimur Ali Khan Pataudi
10. Ryan Kaji