British singer Jessie J reveals most amazing party trick ever (VIDEO)

Photo by Anthony Harvey/Getty Images

LONDON, England -  Jessie J is a talent vocalist who's tracks have topped charts around the globe.

But it turns out she also has a hidden talent that she revealed on the Graham Norton Show.

Jessie J can sing with her mouth closed.

So how did she discover this incredible ability?  Here's the full clip where she explains.