We always thought the standard of beauty in the 1920s involved a waifish figure and cute-as-a-button breasts. But if this 1924 advertisement for the "Psycho-Expander" from Popular Mechanics is any indication, there was a significant subset of flapper-girls with dreams of both stardom and major rackitude. Proving that styles may change but the tits stay the same.

Expand Your Chest With The Psycho-Expander [ModernMechanix]