
Does Katy Perry have the best concert costumes? E! online seems to think so. They compiled a list of Katy's best costumes from her tours, to commemorate the end of the Witness tour.
Here are a few (5) of her best:
One of the Boys / Hello Katy Tour

Teenage Dream / California Dreams Tour


Prism / The Prismatic World Tour

Witness / Witness: The Tour

Which star has the best costumes ever?
Fav costume?
Fav tour?
Source