Leigh's net worth at the time of her death was estimated to be $1 million. This is equivalent to approximately $8 million in today's dollars. The majority of her wealth came from her acting career. She also had a successful career as a stage actress. She appeared in several popular plays, including The Taming of the Shrew (1934), Antony and Cleopatra (1951), and The Third Man (1952).
Leigh's personal life was often troubled. She had two failed marriages and she struggled with mental health issues. She was diagnosed with bipolar disorder in 1945. She was also treated for tuberculosis in the early 1940s. Leigh died of tuberculosis at the age of 53. She was buried in the East Finchley Cemetery in London.