Nicole Scherzinger suffered an enormous burn down her entire leg after boiling hot water was dropped on her … but that didn’t stop this Pussycat Doll from performing one hell of a show.

Taking to her Instagram Stories on Sunday … the singer shared a gruesome photo of her blistering injury she suffered amid the Pussycat Dolls’ European tour.

Over the gnarly pic … Nicole wrote … “Nothing like boiling water falling on your leg an hour before your set. But the show must go on.”

It seems that not only did the show go on … but so did Nicole.

Nicole and the rest of the Pussycat Dolls graced the stage at the PSD Bank Dome in Düsseldorf Saturday … before the band’s Amsterdam show tonight.

In Sunday’s post, Nicole added … “Thanks Düsseldorf for keeping me going. See you soon Amsterdam.”