Katy Perry's Prismatic World Tour opened last night in Belfast, and some Lady Gaga fans were calling her out on Twitter for using some Born This Way Ball elements in her show. And now Mother Monster herself has a little something to say.
"It looks like green hair and mechanical horses are the thing now," Gaga tweeted on Thursday (May 8).
It's true; during her set, Katy did wear a green wig and rode onstage on an Egyptian horse, although they were not exact replicas of Gaga's. She also strapped chairs to her body in Gaga fashion and sang atop an egg-like dress.
Now, of course, we can't say that the tweet was directing at Katy, but after observing last night's evidence, it might be safe to assume.