In Paris, you twice assembled a short skirt (4)
I believe the answer is:
tutu
'short skirt' is the definition.
(I've seen this in another clue)
'in paris you twice' is the wordplay.
'in paris you' becomes 'tu' ('you' in French).
'twice' says to double the letters.
'tu' duplicated is 'TUTU'.
'assembled a' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for tutu that I've seen before include "Ballet-dancer's skirt" , "Giselle's skirt" , "Ballet dancer's costume" , "outfit" , "A ballerina's short skirt" .)