Another first for Mixed Bag season 2, our very first documentary!

Cast your mind back to 2012 when Katy Perry was on top of the world, dating Russell Brand and her new movie Katy Perry: Part of Me was hitting cinemas in 3D!

Giving fans unprecedented access to the real life of the music sensation, Katy Perry: Part of Me exposes the hard work, dedication and phenomenal talent of a girl who remained true to herself and her vision in order to achieve her dreams.

But did Katy deliver a candy covered confectionary or is there something darker going on in this film? Is this actually the Marriage Story of popstar docos? Everyday when Katy wakes up does she hope Russell's dead? (OK bit dark, it's a quote OK?)

Listen in to see if this is a Firework or just a Teenage Dream we'd rather forget.