Being a member of theroyal familyis more than just having fancy titles and appearing at events.
There are actually quite a number of rules each member must follow as well.
According toPureWow,whenever traveling, members of the royal family must always pack an all-black outfit.

This is to ensure they’re prepared to dress appropriately for any sudden death that may occur.
And since the royal family is always in the public eye, they must dress the part.
Now, black clothing immediately goes on every royal’s packing list.

In addition to the black clothing rule, there are some other funeral attire rules for women.
In addition, coats should be kept on at all times.