In high fashion, make better clothes available (7)
I believe the answer is:
couture
'in high fashion' is the definition.
'couture' can be an answer for 'fashion' (I've seen this before). I'm unsure of the 'in high' bit.
'make better clothes available' is the wordplay.
'make better' becomes 'cure' (as in making a patient better).
'clothes' indicates putting letters inside (some letters clothe or cover others).
'available' becomes 'out' (I've seen this in other clues).
'cure' going around 'out' is 'COUTURE'.
Can you help me to learn more?
(Other definitions for couture that I've seen before include "High fashion design" , "Dress designing" , "Design and manufacture of clothing" , "High-fashion dressmaking" .)