Pioneering meditation teacher Nancy Cooke de Herrera has died. She was 90.

Maria Luisa de Herrera says her mother died Feb. 28.

Madonna, Sheryl Crow, Judd Apatow and Paula Abdul were among the students who learned Transcendental Meditation techniques at de Herrera's home in Beverly Hills, Calif.

She studied meditation in India in 1968 alongside Mia Farrow and the Beatles and taught the practice for the remainder of her life. She published a memoir in 2003 about her time in India. Deepak Chopra wrote the introduction.

De Herrera published a second memoir in 2008 about falling in love with her second husband in Argentina. She was working on a third autobiography at the time of her death about her work as the U.S. Ambassadress of Fashion in the late 1950s.