"It’s just this amazing thing when a peer throws the gauntlet down like that,“ the two-time Grammy winner said in reference to the success of Charli's sixth studio album.

After working it out on the remix with Charli xcx, Lorde knew she had to work even harder on her own album to match the level of creative ingenuity her collaborator demonstrated on Brat.

Just hours before headlining a sold-out show at the Allstate Arena Monday night, Charli xcx posted a now-viral video on TikTok, sharing how she’s grappling with the idea that all good things — even her global Brat movement — must come to an end.