Christina Aguilera went incognito for a surprise subway performance and when the crowd found out it was her, they lost their sh*t.
The songstress was joined by Jimmy Fallon and they were being filmed for his late-night show. It all went down on Wednesday night underground in New York City.
Aguilera showed up in an oversized coat, floppy hat and a long wig before ripping off the costume to reveal herself. She belted out her hit "Fighter" with assistance from Fallon and his band.
It wasn't long before the crowd got bigger and louder, proving Aguilera is still queen.
But she's not the only celebrity who has surprised train riders. Remember that epic Adam Sandler moment?