This picture popped up in a group I frequent with no background information, so it is open to speculation. I do know that a number of the big-boob models of the 1960s and 1970s tried out for parts in mainstream movies and were almost universally rejected. I think "Goldfinger" would have been a better movie with her:
Mod edit: that's Summer Cummings I believe. -Pal
Me-too mod edit: definitely Summer Cummings. -gonZo