Diana Dors was an English actress and singer.
Dors in 1968
Dors in The Unholy Wife (1957)
Dors in I Married a Woman (1958)
Dors with Phil Silvers, 1958
The term bombshell is a forerunner to the term "sex symbol" used to describe popular women regarded as very attractive. The Online Etymology Dictionary by Douglas Harper attests the usage of the term in this meaning since 1942. Bombshell has a longer history in its other, more general figurative meaning of a "shattering or devastating thing or event" since 1860.
Marilyn Monroe and Jane Russell
Brigitte Bardot in 1962
Hind Rostom