Katy Perry’s love of dressing up as different characters has been well documented but she takes it to the next level in her newest video ‘Birthday.’ The song is classic Perry, while the video follows Perry as she goes to 5 different birthday parties and ruins them while dressed as the world’s worst birthday entertainers. We know whom we won’t be calling to help out at our next birthday party. Check out the 8-minute video here and tweet us thoughts about #Birthday @YAMzine!