Beautiful female -- look! (4)
I believe the answer is:
fair
'beautiful' is the definition.
(similar in meaning)
'female look' is the wordplay.
'female' becomes 'f' (abbreviation).
'look' becomes 'air' (something might have a certain air or look).
'f'+'air'='FAIR'
(Other definitions for fair that I've seen before include "Average" , "nothing special" , "Even-handed travelling show?" , "Where the helter-skelter may be" , "[OPPOSITE OF] Dark" .)