'Giving Jimmy monologue notes for tonight’s show!' Hugh Jackman jokes with TV host Fallon before appearance to promote The Greatest Showman

His film The Greatest Showman hits Australian cinemas on Boxing Day.

But with the movie's earlier American release scheduled for December 20, Hugh Jackman is in busy promotional mode.

The 49-year-old shared a backstage snap with Jimmy Fallon on Friday, as he prepared to be a guest on the comedian's late night talk show.

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Engaged: Hugh Jackman shared a backstage snap with Jimmy Fallon on Friday, as he prepared to be a guest on the comedian's late night talk show

Engaged: Hugh Jackman shared a backstage snap with Jimmy Fallon on Friday, as he prepared to be a guest on the comedian's late night talk show

The photo showed the Hollywood star deep in conversation with Jimmy, 43, prior to his appearance. 

'Giving @jimmyfallon monologue notes for tonight’s show,' he joked in the image's caption.

'He's getting notes from a real LEGEND!' gushed one fan in the comments section.

Anticipated: His film The Greatest Showman hits Australian cinemas on Boxing Day

Anticipated: His film The Greatest Showman hits Australian cinemas on Boxing Day

Earlier the same day, Hugh and his Showman co-stars Zac Efron and Zendaya stepped out in New York City to film a segment for James Corden's variety show. 

During filming, Zac took a hard tumble on his tricycle in front of his co-stars. 

The actors were filming scenes for The Late Late Show segment, Crosswalk The Musical.

Talented: Earlier the same day, Hugh and his Showman co-stars Zac Efron (pictured) and Zendaya stepped out in New York City to film a segment for James Corden's variety show

Talented: Earlier the same day, Hugh and his Showman co-stars Zac Efron (pictured) and Zendaya stepped out in New York City to film a segment for James Corden's variety show

Hugh and Zendaya were seen having a laugh after witnessing Zac's fall first hand.

For the skit, Hugh dressed up as his lead character, P.T. Barnum, from the film. 

The movie is based on the story of P.T. founding the famous traveling Ringling Bros. and Barnum and Bailey circus.

Entertaining: The movie is based on the story of P.T. founding the famous traveling Ringling Bros. and Barnum and Bailey circus

Entertaining: The movie is based on the story of P.T. founding the famous traveling Ringling Bros. and Barnum and Bailey circus

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