'Pitch Perfect 3' cast (c) Instagram The 36-year-old actress - who plays the role as The Barden Bella's vocalist Patricia, who nicknames herself Fat Amy in the movie - has revealed her and her fellow co-stars including Anna Kendrick and Brittany Snow have joined forces to shoot the follow-up to the comedy. The Australian star revealed the news on her Instagram account with a picture of her and the cast all posing with three fingers up, which she captioned: "#PP3 #Bellas Day One Pitches x (sic)."