Speaker’s old hair feature artist captured (8)
I believe the answer is:
oratress
'speaker's' is the definition.
(female orator)
'old hair feature artist captured' is the wordplay.
'old' becomes 'o' (abbreviation).
'hair feature' becomes 'tress' (a tress is a lock of hair).
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'captured' indicates putting letters inside.
'o'+'tress'='otress'
'otress' going around 'ra' is 'ORATRESS'.
(Other definitions for oratress that I've seen before include "Someone needing a platform" , "public speaker" .)