Presumably this is what wardrobe mistress in The Abbey is doing and it's addictive
I believe the answer is:
habit-forming
'addictive' is the definition.
(I've seen this before)
'presumably this is what wardrobe mistress in the abbey is doing and it's' is the wordplay.
I cannot quite see how this works, but
'in' is within the answer.
'it's' could be 'it' (I've seen this in other clues) and 'it' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for habit-forming that I've seen is " Addictive".)