Born in Pasadena, California in 1935, American bodybuilder and physical fitness expert Betty Brosmer started her model career at the age of 13. The result was more than impressive; she has won over 50 beauty contests, has appeared on magazine covers more than 300 times, her image decorated more than a hundred calendars, billboards across the country, and she was the highest paid model.

Brosmer was a forerunner of such stars as Marilyn Monroe and Jayne Mansfield. Her phenomenal measurements: 38-18-36 (in inches) and 96-45-91 (in centimeters) gave her the title “The most gorgeous body of 50s”. During the 1950s, she was a popular commercial model and pin-up girl.

After marrying entrepreneur Joe Weider in 1961, Brosmer began a lengthy career as a spokesperson and trainer in the health and bodybuilding movements. She has been a longtime magazine columnist and co-authored several books on fitness and physical exercise.

Take a look at these rare color pictures to see the beauty of Betty Brosmer in the 1950s.