Clothes model is stupid person (5)

I believe the answer is:

dummy

I'm a little stuck... Click here to teach me more about this clue!

'clothes model' is the definition.
'dummy' can be an answer for 'model' (I've seen this before). I am unsure of the 'clothes' bit.

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for dummy that I've seen before include "Bridge hand on table" , "Mock-up; non-working version" , "Clothes shop model" , "Baby's comforter" , "Hand played by declarer" .)

I've seen this clue in The Sun.

Want a hint initially instead of a full solution? Install my app