After marrying magazine publisher Joe Weider on April 24, 1961, she began a lengthy career as a spokesperson and trainer in the health and bodybuilding movements.

[4] Brosmer returned to Los Angeles and was soon asked to pose for two of the most celebrated pin-up artists of the era, Alberto Vargas and Earl Moran.

[4] Despite her age, over the next four years Brosmer found frequent work as a commercial model, and graced the covers of many of the ubiquitous postwar "pulps": popular romance and crime magazines and books.

[7] She won numerous New York area beauty contests in the early 1950s, most famously "Miss Television"; in that capacity she appeared in TV Guide, as well as on the widely seen programs of Steve Allen, Milton Berle, Jackie Gleason and others.

[6] Her fame had grown so much by the age of eighteen that when she left New York and returned to California – this time to Hollywood – her departure was noted in the celebrity column of Walter Winchell.

[8] Back on the West Coast, Brosmer maintained a busy freelance workload in fashion and commercial modeling, while at the same time continuing her education, majoring in psychology at UCLA.

[6] For Bernard, a well-established photographer who had worked with Marilyn Monroe and Jayne Mansfield, Brosmer would prove to be the top-selling pin-up model of his career.

[10] During this time, Brosmer was said to be the highest paid pin-up model in the United States[11] – she was seen in "virtually every men's magazine of the era".

The resulting picture set was rejected, however, after Brosmer declined to do any nude posing: "I wore sort of a half-bra or low demi-bra with nothing showing ... and that's what I thought they wanted.

[13] That future husband would turn out to be bodybuilding enthusiast and magazine publisher Joe Weider, who had first become aware of Brosmer through his contact with Keith Bernard for fitness models.

The gift was key to the Stark Center's establishment of a permanent exhibition space, now known as the Joe and Betty Weider Museum of Physical Culture.