Her Serene Highness Princess Charlotte of Monaco (Charlotte Louise Thérèse Grimaldi, born May 4th 1992), Marquise of Baux, is the only child of Louis III of Monaco. On August 14th 2017, Louis III abdicated and was succeeded by his daughter who became Charlotte I, the Princess of Monaco. She is the second reigning sovereign princess of Monaco and the youngest reigning monarch in the world, being only a month junior than the previous record holder - Rukidi IV of Toro.
On May 4th 2017, the Hereditary Princess married long time friend and boyfriend of less than a year, Jason Collins.
The Princess, studied International Relations at Yale University in the United States, where she met ex-girlfriend Lucie Cohen whom she dated for four years. Her Serene Highness is openly bisexual and an advocate for LGBT rights, in 2016 she opened the Princess Charlotte Foundation which aims to support LGBT Youth in Monaco and to campaign for equal rights.