In a modern setting short skirts may be suggestive (11)
I believe the answer is:
reminiscent
'suggestive' is the definition.
(I've seen this before)
'in a modern setting short skirts may' is the wordplay.
'in' indicates putting letters inside.
'a modern' becomes 'recent' (I've seen this in another clue).
'setting short skirts may' becomes 'minis' (I can't explain this - if you can you should give a lot more credence to this answer).
'recent' enclosing 'minis' is 'REMINISCENT'.
'be' acts as a link.
Can you help me to learn more?
(Other definitions for reminiscent that I've seen before include "Bringing back" , "Like Proust, perhaps" , "Evocative" , "Suggestive - in ten crimes (anag)" , "Stirring memories" .)