charli xcx and troye sivan presents sweat. tickets are on sale now. please welcome back to the show charli xcx and troye sivan, everybody. [ cheers and applause ] ♪ so happy to have you both here. >> thank you. >> seth: you are back on the show, but this is the first time we've chatted. charli, you were here ten years ago. >> oh. >> seth: there you are. troye, you were here eight years ago, and now we're so happy to have you here together. how are you both? >> good. our looks have changed quite a lot. >> yeah. >> fashion. >> seth: that's the thing with pop stars. the looks change. >> yeah. >> seth: i have to ask. you guys go on this tour together. [ light laughter ] how did you first meet? >> the first time -- well, so, actually, i saw you before i met you at a festival in the uk. i went and watched charli perform. i was like front row. charli looked at me. i got starstruck. [ light laughter ] >> seth: charli, do you remember looking at troye in the front row? >> no. >> seth: okay. [ laughter ] >> fair enough. >> there were probably like 25 people t