This must be Marilyn Monroe, despite the current popularity of Bo Derek. Monroe featured on the most publicised calendar in history, published in 1951 by John Baumgarth Co.

The original nude picture was taken in May 1949 by Tom Kelly, a California photographer. Kelly is supposed to have remarked at the time - "This wasn't just another girl. This was a girl with instinct for drama and showmanship. Her lips parted provocatively, her body was arched and magnificent. There was a natural grace about her."

A series of later films made Monroe the leading American sex-symbol. Her mysterious death, following rumours of possible liaisons with eminent Americans, added something to her already vast legend. It was a simple matter to declare that she committed suicide. According to one report, however, no chemical "sludge" was found in her stomach after death. This has been held as evidence that she did not, in fact, commit suicide.