She was born Patsy Ann McClenny on February 3, 1950 in Dallas, Texas. She began acting as a child, when her mother enrolled her in drama lessons after she was too shy to give a book report in class.

In 2019, Lansbury performed at a one-night benefit staging of Oscar Wilde's play "The Importance of Being Earnest" (1895). a farce satirizing Victorian morals. She was cast in the role of society lady ...