Aimee Semple McPherson, also known as Sister Aimee or simply Sister, was a Canadian-American Pentecostal evangelist and media celebrity in the 1920s and 1930s, famous for founding the Foursquare Church. McPherson has been noted as a pioneer in the use of modern media, because she used radio to draw on the growing appeal of popular entertainment in North America and incorporated other forms into her weekly sermons at Angelus Temple, one of the first megachurches.
