Trying to embrace fashion is very upsetting (5-7)
I believe the answer is:
heart-rending
'very upsetting' is the definition.
'heart rending' can be an answer for 'upsetting' (I've seen this before). I'm unsure of the 'very' bit.
'trying to embrace fashion' is the wordplay.
'trying' becomes 'hearing' ('hear' can be a synonym of 'try').
'to embrace' means one lot of letters goes inside another.
'fashion' becomes 'trend' (I've seen this in another clue).
'hearing' going around 'trend' is 'HEART-RENDING'.
'is' is the link.
Can you help me to learn more?
(Other definitions for heart-rending that I've seen before include "moving" , "Greatly distressing" , "Causing great sadness or distress" , "Poignant" , "Agonisingly sad" .)