Still in hot pants? How distasteful! (6)
I believe the answer is:
though
'still' is the definition.
(thesaurus)
'hot pants? how distasteful' is the wordplay.
'pants?' indicates anagramming the letters (UK informal term for 'nonsense' or 'rubbish').
'how distasteful' becomes 'ugh' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'hot' is an anagram of 'tho'.
'tho'+'ugh'='THOUGH'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for though that I've seen before include "Concessive conjuction" , "However" , "Even if" , "Despite the fact that" , "Nevertheless" .)