Cleaner in RuPaul's stage wear, including his pants (7)
I believe the answer is:
dishrag
'cleaner' is the definition.
(something which cleans)
'wear including his pants' is the wordplay.
'wear' becomes 'drag' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'including' indicates putting letters inside.
'pants' indicates anagramming the letters (UK informal term for 'nonsense' or 'rubbish').
'his' anagrammed gives 'ish'.
'drag' enclosing 'ish' is 'DISHRAG'.
'in rupaul's stage' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for dishrag that I've seen before include "American tea towel" , "Washing-up cloth" , "Wiper in the kitchen" , "used to clean in kitchen" , "Cleaner" .)