The TNT Boys got one hell of a shock whilst performing on 'The Late Late Show with James Corden.'

Ariana Grande, the record breaking artist, made a surprise appearance on James Corden's talk show last night. She left the Philippines boyband, TNT Boys, in an absolute state of shock as they were performing 'And I Am Telling You I'm Not Going' by Jennifer Hudson.

Half-way through their performance, Grande made an entrance - and the lads couldn't handle it. Massive fans of the singer, TNT Boys try to continue singing all the while they try to hold back their tears of joy.

Have a look at their reaction to meeting Ariana Grande below - it's awful cute.

In other Ariana Grande news, the singer has made chart history in The States by securing the top three spots on the Billboard Hot 100 chart; the only other performer to do this was The Beatles way back in 1964.