Sex is a limited-level portrait book by the famous American singer Madonna. It was photographed by the famous fashion photographer Steven Meisel and by American Hachette Book, Maverick and Callaway Books in 1992. Issued on October 21. On the second day of Madonna's fifth studio album Erotica, he also included a single CD entitled "Erotic", which is another version of the album's single of the same name "Erotica". More than 150,000 copies were sold in the United States on the first day of release, more than 500,000 copies were sold in a week, and it topped the (New York Times) bestseller list for three consecutive weeks, which is worth collecting.