Tart wears a new garment that only covers the front of body (5)
I believe the answer is:
apron
'garment that only covers the front of body' is the definition.
'apron' can be an answer for 'garment' (I have seen 'Protective garment' mean 'apron' so perhaps 'garment' could also mean 'apron'). I am not sure about the rest of the definition.
'tart wears a new' is the wordplay.
'tart' becomes 'pro' (I've seen this in other clues).
'wears' indicates putting letters inside.
'new' becomes 'n' (abbreviation as in New Testament NT).
'a'+'n'='an'
'pro' put within 'an' is 'APRON'.
Can you help me to learn more?
(Other definitions for apron that I've seen before include "standing" , "Pinny -part of the fairway leading onto the green" , "Area around aircraft hangar" , "Protective wear - type of stage" , "Kitchen garment or airfield surface." .)