Extension line Good Hair Day recently sued Katy Perry for allegedly not living up to her end of their “oral agreement,” and trashed her in the process, saying she’d had a “significant decrease in appeal across Europe” and was “increasingly polarizing … with negative perceptions in all markets.” Katy countersued for her fee and not only did GHD get nothing, they ended up having to give Katy “a significant amount of money.” Burn!