Should she have used stronger elastic? (3-2)
I believe the answer is:
pin-up
'have used stronger elastic?' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe there's an association between them I don't understand?
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for pin-up that I've seen before include "Attractive celebrity" , "Poster of an attractive person" , "Cover girl" , "Alluring poster" , "Photographer's model" .)