Pornographic magazine While the 1940s images focused mostly on legs, by the 1950s, the emphasis shifted to breasts. Betty Grable and Marilyn Monroe were two of the most popular pinup models. Marilyn Monroe continued to be a popular model for the men's magazines in the 1950s. The 1950s saw the rise of the first mass-market softcore pornographic magazines: "Modern Man" in 1952 and "Playboy" in 1953. Hugh Hefner's "Playboy" started a new style of the men's glossy magazine (or girlie magazine). Hefner coined the term centrefold, and in the first edition of his "Playboy" used a photograph of a nude Marilyn Monroe,
Centerfold maintain a monthly designation reminiscent of a print magazine centerfold; for example, the "Twistys" Treat. Centerfold The centerfold or centrefold of a magazine refers to a gatefolded spread, usually a portrait such as a pin-up or a nude, inserted in the middle of the publication, or to the model featured in the portrait. In saddle-stitched magazines (as opposed to those that are perfect-bound), the centerfold does not have any blank space cutting through the image. The term was coined by Hugh Hefner, founder of "Playboy" magazine. The success of the first issue of "Playboy" has been attributed in large part