
That is nice. With her chest swelling like that, no wonder she got some colour on her cheeks! 😉
This was considered very sexy but also controversial at the time. She was busty for the time, but not that impressive by todays BEA standards. 
For many, todays BEA stadards are measured on Beshine scale of magnitude, and almost no one else can reach her dimensions. 😄
Actress Jan Sterling is not that big, but I do find her entertaining in for example Alaska Seas (1954). The film can be viewed on Ytube.
Breasts implants were not invented until the late 1960's. Before that, they used to inject silicone into the breasts like Carol Doda had done back in the 1960's. Back in the 1950's, nature had to give you big boobs. 
Breast implants - what an awesome invention. 😁
Of course views have been affected by what has happened since the 1950s. Also, for some reason Hollywood does not like truly busty women. Beshine for sure is an extreme outlier, but have there ever been any successful mainstream actresses with figures similar to say Milena Velba or Nancy Quill? Or maybe I'm mistaken in thinking that those ladies would be palatable for the mainstream.
No implants in the 50s, but that does not mean that other ways to expand bustlines were not tried...