30. They Wear Buckled Shoes
The English shoe brand Start-rite received its 'Royal Warrant' in 1955, and has provided over 1,500 pairs of shoes to the royals ever since. You can often catch the children wearing their shoes, such as Prince George wearing their Navy Blue Leather Boys Buckle First Walking Shoes here. It's not necessarily a "rule" for the royal children to wear Start-rite's shoes, but they're in heavy rotation.