'Gay Divorcee' with classy banter, dancing... (9)
I believe the answer is:
exuberant
'gay' is the definition.
(thesaurus)
'divorcee with classy banter dancing' is the wordplay.
'divorcee' becomes 'ex' (I've seen this in other clues).
'with' is an insertion indicator.
'classy' becomes 'u' (I've seen this in other clues).
'dancing' indicates an anagram.
'banter' is an anagram of 'berant'.
'u' going into 'berant' is 'uberant'.
'ex'+'uberant'='EXUBERANT'
(Other definitions for exuberant that I've seen before include "Abounding in vitality" , "Full of energy, high spirits" , "Vivacious; effusive" , "Full of beans" , "High-spirited" .)