Watch: Scarlett Johansson mimics Cher, croons to her hit song 'Believe'

American actor Scarlett Johansson is channelling her inner Cher on the sets of  The Tonight Show starring Jimmy Fallon.

Speaking about her sense of humour, Fallon asked Johansson that he has heard good things about her Cher impression.  

"Yeah. I do a Cher impersonation. Yeah, I do. I do," Scarlett confirmed.

Fallon then requested the Black Widow star to do her famous Cher impression on camera. "I haven't broken it out in a while. I don't think I've broken it out since I got my tonsils removed," she added of her impersonation of the 75-year-old singer.

She then began to sing Cher's 1998 hit song Believe.

"What am I supposed, I don't know, to do, sit around and wait for you?," Scarlett sang.

"Well, I can't do that, there's no turning back," she continued holding the last note.

"No way, my god, hey that was it!," Jimmy said in an impressed tone.

"That's not bad," Scarlett admitted.

Scarlett in Sing 2 reprises her role as porcupine punk rocker Ash. Sing 2 is scheduled to release next week.