What's the difference between Gege and Princess?

I know the difference between Gege and Princess: different definitions and different status.

Gege is a title for women in Manchu Dynasty, especially the daughter of Manchu royal family. Princess is the title of imperial daughter, imperial daughter and heavy daughter in ancient China, corresponding to male royal family. In terms of status, Gege is the daughter of the prince of the Qing Dynasty, and the princess is the daughter of the emperor and the vassal. In addition, there are many forms of addressing the princess, which can be named by country name, county name or beautiful name.