Robert Kardashian initially received attention for being one of O. J. Simpson's lawyers during the O. J. Simpson murder case, but the family parlayed Kim's 2002 sex tape with singer Ray J, Kim Kardashian, Superstar, into a reality-TV and business empire.[4] They have since been referred to as "America's most famous family" by Glamour,[5] "one of the most influential family 'dynasties' in the world" by Insider,[6] and the biggest influencers of the 2010s by Vogue.[7] They are the focus of the book Kardashian Dynasty: The Controversial Rise of America's Royal Family by Ian Halperin.[8]