New gown about right? No, it's not right (5)
I believe the answer is:
wrong
'not right' is the definition.
(I know this)
'new gown about right?' is the wordplay.
'new' is an anagram indicator.
'about' is an insertion indicator.
'right?' becomes 'r' (abbreviation).
'gown' anagrammed gives 'wong'.
'wong' going around 'r' is 'WRONG'.
'no it's' acts as a 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 wrong that I've seen before include "Erroneous" , "Unjust act" , "Incorrect, illegal or immoral" , "Erronious" , "Inappropriate" .)