Difficult question from model, right? (5)
I believe the answer is:
poser
'difficult question' is the definition.
(I've seen this before)
'model right?' is the wordplay.
'model' becomes 'pose' (synonyms).
'right?' becomes 'r' (common abbreviation).
'pose'+'r'='POSER'
'from' acts as a link.
(Other definitions for poser that I've seen before include "Toughie" , "Tricky question" , "What's difficult" , "Question; one trying to impress" , "Spore raises a difficult question" .)