"i love brat but i absolutely despise charli xcx as a person, like how narcissistic do you have to be to believe that you deserve the headliner spot over GREEN DAY," another said.

Billie Joe Armstrong donned a Brat hat, and Tré Cool responded to Charli's "Miss Should Be Headliner" sash with a toilet paper sash of his own

At a Coachella 2025 weekend one after-party, Charli XCX donned a “Miss Should Be Headliner” sash. While the move brought joy to her fans, Green Day fans found it to be disrespectful (or dare I say bratty).