The FIFA World Cup has barely begun, but the opening ceremonies already gave us plenty to talk about - and no, we're not talking about football.



From Los Angeles to Toronto, some of the biggest music stars took over the stage, bringing not just performances but some seriously eye-catching fashion with them.



And honestly, if there was an unofficial award for best-dressed performers of the night, Katy Perry, Lisa and Nora Fatehi would all be strong contenders.



Katy Perry looked like a walking disco ball - in the best way possible



Katy Perry knows how to make an entrance.



For her FIFA World Cup performance in Los Angeles, she stepped out in a sparkling silver dress that practically lit up the stadium. Every time she moved, the fringe shimmered under the lights, making it impossible to look away.