America split the atom, but far more powerful in its arsenal was bombshell Jayne Mansfield, whose flesh missiles could pop off an entire city of men with one flash. Her 40-23-37 jugantor figure made her more than a Marilyn Monroe knockoff, but a knockout of boobalicious dimensions. Girlie mags first introduced the curvaceous cutie, but the pages of pinup pulps couldn't hold Jayne's bountiful beauty, and soon stage and screen beckoned. Broadway's Will Success Spoil Rock Hunter? exposed Jayne's ample body of work to the public and led to a frisky film version in 1957. But Jayne could never rise above her image as a sloppy-second sex symbol like Mamie Van Doren and Diana Dors. That's a good thing. It meant revealing performances in movies such as Promises! Promises! (1963), in which juggy Jayne let it all hang out. It was the first American film to disobey the Hays Code and include nude scenes from a major star. Lost to us too soon in a June 29, 1967, in a tragic car accident, this anything-but-plain Jayne had all the goods to be oh so bad.