In 1866, she moved to Paris to continue her studies, where she worked with private tutors since women were not allowed to enroll in the École des Beaux-Arts. She exhibited at the Paris Salon for the first time in 1868. In 1877, Edgar Degas invited her to exhibit with the Impressionists, making her the only American artist to officially join the group.
Cassatt participated in four of their eight exhibitions between 1879 and 1886. She never married, dedicating her life to her art career while maintaining close relationships with her family. In her later years, Cassatt's eyesight deteriorated due to cataracts, and she stopped painting around 1914. She died on June 14, 1926, at her country home, Château de Beaufresne, near Paris, France.