 Louise Anne's father died in 1710, eleven months after having inherited the title of "Prince de Condé" at the death of his own father.Since her first cousin, Louis d'Orléans, never had a daughter who survived into adulthood, Louise Anne became known at court by the style of "Mademoiselle", which she held from 1728 when Louis' daughter, Louise Marie d'Orléans, died at the age of one.During the Régence of her cousin, Philippe II, Duke of Orléans, she became romantically involved with the Duke of Richelieu, a grandnephew of Cardinal Richelieu.