Bristles ’e’d begun to groom (8,7)
I believe the answer is:
designer stubble
'bristles 'e'd begun to groom' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.
'bristles 'e'd begun to groom' is the wordplay.
'to groom' indicates anagramming the letters.
'bristles'+'ed'+'begun'='bristlesedbegun'
'bristlesedbegun' with letters rearranged gives 'DESIGNER STUBBLE'.
(Other definitions for designer stubble that I've seen before include "kind of personal appearance" , "Fashionable unshaven look" , "shave this?" .)