Cat Marnell is an American writer and socialite known for her candid discussions of her struggles with addiction and mental health. Born on September 10, 1982, she gained prominence as a beauty editor for titles like "Lucky" and "XOJane," where her raw and often controversial personal essays about her lifestyle, including drug use and nightlife, resonated with a wide audience. In 2017, Marnell published her memoir "How to Murder Your Life," which detailed her tumultuous experiences in the beauty industry alongside her battles with prescription drug addiction. Her unapologetic and self-destructive persona has been both criticized and celebrated, making her a polarizing figure in contemporary pop culture and media.