Some lucky NYC subway riders got a performance from Christina Aguilera

Christina Aguilera dressed down, disguised herself with a floppy brown hat and sunglasses, and sang her heart out for a very lucky group of subway riders in New York City. The pop star’s voice seemed to draw a crowd pretty fast, but many still looked surprised when she revealed her signature blond locks. The moment was part of a segment for “The Tonight Show Starring Jimmy Fallon.”