Lovely sense of humour, feature required in request (10)

'lovely' is the definition.
(thesaurus)

'sense of humour feature required in request' is the wordplay.
'sense of humour' becomes 'wit'.
'feature' becomes 'chin' (facial feature).
'required in' is an insertion indicator.
'request' becomes 'beg' (begging is a kind of requesting).
'wit'+'chin'='witchin'
'witchin' placed into 'beg' is 'BEWITCHING'.