Attractive person losing last hair, upset (8)
I believe the answer is:
distress
'upset' is the definition.
(distressing is a kind of upseting)
'attractive person losing last hair' is the wordplay.
'attractive person' becomes 'dish' (I've seen this before).
'losing last' means to remove the last letter.
'hair' becomes 'tress' (tress is a kind of hair).
'dish' with its final letter taken off is 'dis'.
'dis'+'tress'='DISTRESS'
(Other definitions for distress that I've seen before include "Upset" , "Psychological suffering" , "Mental or emotional pain" , "Anguish - trouble - danger" , "Suffering, worry" .)