His hair-style suits the girls (7)
I believe the answer is:
pageboy
'his hair' is the definition.
'pageboy' can be an answer for 'hair' (pageboy is a kind of hair). I'm unsure of the 'his' bit.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for pageboy that I've seen before include "Youthful hotel attendant" , "Young bridal attendant" , "train supporter" , "Attendant at wedding; haircut" , "Lad at wedding" .)