Just when we thought things couldn't get any worse over on The Real Housewives of Beverly Hills.
But that wasn't the case!
Katy decided to let her fans hear her roar some Queen Madge during her Belfast concert yesterday as part of her Prismatic World Tour! She sang International Smile, which is appropriate because every knows her smile across the world!
And she even had a walk down the runway to Vogue! Snap snap went every camera ever!