Whiskey Tango Foxtrot's Margot Robbie displays extremely bad lipreading skills on Jimmy Fallon

The Harley Quinn actor should definitely stick to the day job

(YouTube)

The very talented Margot Robbie arrived hit the bigtime playing Leonardo DiCaprio's wife in The Wolf of Wall Street and has upcoming leads roles in films The Legend of Tarzan and, of course, Suicide Squad.

However, promoting new comedy Whiskey Tango Foxtrot on Jimmy Fallon's US chat show, the Australian actor proceeded to showcase one unexpected major weakness: lip-reading.

The segment called 'The Whisper Challenge' saw the two taking it in turns to wear a pair of headphones while the other whispered words the other attempted to guess.

The words included labradoodle, Bondi Beach and the name of film star Reese Witherspoon; while proving she had great diction with Fallon guessing all of his fairly succinctly 9she is an actor, after all), Robbie fared terribly when the she assumed the role of the guesser.

Robbie is starring as Harley Quinn in David Ayer's upcoming supervillain film Suicide Squad. Her performance alongside Jared Leto's incarnation of the Joker has so far been the trailers' highlight.

Whiskey Tango Foxtrot is released on 22 April while Suicide Squad is released 5 August.