Poetry penned by Joely Richardson (5)
I believe the answer is:
lyric
'poetry' is the definition.
(I know that lyric is a type of poetry)
'penned by joely richardson' is the wordplay.
'penned by' says the answer is hidden in the clue.
'LYRIC' is hidden within 'joely richardson'.
(Other definitions for lyric that I've seen before include "Words to a song" , "One barred from native country" , "Melodic" , "Text of a popular song" , "Cyril (anag.)" .)