Charming young lady broadcasting (8)
I believe the answer is:
debonair
'charming' is the definition.
(I've seen this before)
'young lady broadcasting' is the wordplay.
'young lady' becomes 'deb'.
'broadcasting' becomes 'onair' (I've seen this before).
'deb'+'onair'='DEBONAIR'
(Other definitions for debonair that I've seen before include "The dashing" , "(Of man) stylish, charming" , "Chic" , "Light-hearted" , "I broaden out with self-confident manner" .)