Ariana Grande is currently enjoying a string of hits on the pop music charts but wasn't fully prepared for her first talk show appearance on The Tonight Show Starring Jimmy Fallon. Despite being nervous in her opening remarks, Grande delivered an amazing impression of Celine Dion.

Grande explained that she had never spoken on a talk show before and felt really vulnerable, The Huffington Post added. Despite early nerves, the "Break Free" singer seemed to become more comfortable and even performed a duet of Dion's "Beauty and the Beast" with Fallon.

Prior to this impromptu performance, Grande was featured earlier in the show for another episode of Ew!.

The Inquisitr added that Grande is known for imitating Mariah Carey but this is one of the fist times that she has covered Dion.

Grande had a dead on impression for Dion. If only we had been able to hear "My Heart Will Go On." Watch the performance here:

Image courtesy of INFphoto.com