Lillian Pulitzer Rousseau (born Lillian Lee McKim; November 10, 1931 – April 7, 2013), better known as Lilly Pulitzer, was an American socialite and fashion designer. She founded Lilly Pulitzer, Inc., which produces clothing and other such wares featuring bright, colorful, floral prints. As the brand is popular with high society, she was called the "Queen of Prep".