Girls getting drunk with a new pink prosecco, maybe (9,4)
I believe the answer is:
sparkling wine
'prosecco maybe' is the definition.
(I know that Prosecco is a sparkling wine)
'girls getting drunk with a new pink' is the wordplay.
'getting drunk with' is an anagram indicator.
'a'+'new'+'pink'='anewpink'
'girls' with its letters anagrammed with 'anewpink' makes 'SPARKLING WINE'.
(Other definitions for sparkling wine that I've seen before include "Fizzy alcoholic drink" , "Asti, perhaps" , "Such as champagne" .)