To which film genre does peplum belong?
Correct answer: Historical

Castra
A peplum is also a particular style of women's clothing.
It is a flared part of any garment worn on the torso,...jacket, blouse, jumper etc.
The flare is from the waist to the hips.
Think 1940s style.

Snance
I really dig the peplum films of the 1950's/1960's! Steve Revees was the bomb!