Modern ladies wear bustles? Just the opposite (6)
I believe the answer is:
slacks
'modern ladies wear' is the definition.
'slacks' can be an answer for 'wear' (slacks is a kind of wear). I'm not sure about the 'modern ladies' bit.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for slacks that I've seen before include "Avoids work - trousers" , "casual attire" , "takes it easy" , "Loose casual trousers" , "Pants for casual wear" .)