Bellucci -- not a girl about to eat pasta (8)
I believe the answer is:
rigatoni
'pasta' is the definition.
(I know that Rigatoni is a type of alimentary paste)
'bellucci not a girl about to eat' is the wordplay.
'to eat' says the answer is hidden in the clue (I've seen 'eating' mean this).
'about' says the letters should be written in reverse.
'inotagir' is hidden in the letters of 'bellucci not a girl'.
'inotagir' reversed gives 'RIGATONI'.
(Other definitions for rigatoni that I've seen before include "Pasta; at origin (anag.)" , "Pasta - I got rain (anag)" , "Pasta dish" , "Short fluted tubes of pasta" , "Type of pasta" .)