Forever 21 Customer Service Phone Numbers Customer service: 1-888-494-3837   Forever 21 Headquarters Info, Email, Phone number, Website and live chat Information Founded: April 21,1984; 34 years ago Founder: Do Won Chang and Jin Sook Chang Headquarters: Los Angeles, California, U.S. Forever 21, stylized as FOREVER 21, is an American fast fashion retailer headquartered in