Gege, Manchu, means Miss. It is a title for women in Manchu and Qing Dynasty, and it is a unified title for the daughters of Qing royal family. When used as a formal title, in the late Jin Dynasty, the daughter of the monarch and Baylor was called Gege. Since Emperor Taizong of the Qing Dynasty, the titles have been redefined according to the habits of Han people. As an informal title, it is used to address other women with high status.
The meaning of using "Gege" in naming is mostly "Princess", which shows parents' love for their children.