Female attending a charity event (4)
I believe the answer is:
gala
'charity event' is the definition.
'female attending a' is the wordplay.
'female' becomes 'gal' (gal is a kind of female**).
'attending' says to put letters next to each other.
'gal'+'a'='GALA'
(Other definitions for gala that I've seen before include "Festive occasion - variety of apple" , "field day" , "Festive performance" , "A show of charity" , "Festive entertainment" .)