AceShowbiz -

Madonna recently dropped the bomb on her troubled past in her explosive new interview with Harper's Bazaar magazine, complete with black-and-white shots taken by famed fashion photographer Terry Richardson. This time, her explosive photos continue to come out, taken by photographer Herman Kulkens and not recently but decades ago, in 1977 to be precise.

Back then, Madonna was an 18-year-old University of Michigan dance student who posed nude for $10 an hour for Kulkens. Among the resulting images that are now up for auction include a colored shot of the teenaged Madonna wearing a man's striped shirt and a loosely-hanging burgundy tie as she held up a pair of glasses to her parted lips.

In two black-and-white photos, the young Madonna posed in the nude, her back turned to the camera. In one, she's brushing the hair of another model as they both sat on the floor, while in the other, she's wearing nothing but a wide-brimmed hat and a blanket that does nothing to cover her exposed body as it lay draped down around her legs.

These and other seductive images are among the assorted belongings left behind by Penthouse founder Bob Guccione upon his death in 2010 which were then bought by Wall Street mogul Jeremy Frommer. Apart from the Material Girl, other celebrities that have photos, not necessarily risque, in Gucciones's collection include Arnold Schwarzenegger and President Bill Clinton's mistress Gennifer Flowers.