Doctor Colin reluctant to produce skimpy garment (9)
I believe the answer is:
loincloth
'skimpy garment' is the definition.
'loincloth' can be an answer for 'garment' (loincloth is a kind of garment). I am not sure about the 'skimpy' bit.
'doctor colin reluctant' is the wordplay.
'doctor' indicates an anagram.
'reluctant' becomes 'loth' (if you are loth to do something you are reluctant).
'colin' anagrammed gives 'loinc'.
'loinc'+'loth'='LOINCLOTH'
'to produce' acts as a link.
Can you help me to learn more?
(Other definitions for loincloth that I've seen before include "Simple garment" , "this is placed round middle of groin?" , "Minimum clothing?" , "Garment Indian may have" , "Sort of dhoti" .)