@CarmillaKriegstein
Thats actually not true. The "Crown" title denotes the first person in line for succession of the throne. The wife of the Crown Prince would be the Princess consort as she would have no legitimate claim to the throne. She would have to be born into the royal family and he would have to just be a regular prince. Then she would also have be first in the line of succession as well which doesn't really work here. Basically you can can only have one "Crown" anything whether it be princess or prince.
Thats actually not true. The "Crown" title denotes the first person in line for succession of the throne. The wife of the Crown Prince would be the Princess consort as she would have no legitimate claim to the throne. She would have to be born into the royal family and he would have to just be a regular prince. Then she would also have be first in the line of succession as well which doesn't really work here. Basically you can can only have one "Crown" anything whether it be princess or prince.