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Doppelganger: Elizabeth Olsen, 28, was barely distinguishable from her equally stunning stunt double as she shot action scenes for the film Avengers: Infinity War on the Royal Mile in Edinburgh on Sunday evening

The Captain America: Civil War star appeared to be concentrating on perfecting the scenes with her lithe double act.

The beauty practiced her moves as she crouched into a defensive position, under the tutelage of her acrobatic colleague.

But despite being on set all night, Elizabeth ensured she displayed her signature sartorial elegance, wearing several silver rings and sporting a smoky eye.

The star also displayed flawless skin under her pared-back make-up and wore her brunette tresses in loose waves over her shoulders.

Practice: The 28-year-old younger sister of the Olsen twins – and her doppelganger – wore their long brunette tresses over practical puffa jackets, high waisted jeans and plain black tops

In character: The Captain America: Civil War star appeared to be concentrated on perfecting the scenes with her lithe double act

Always elegant: But despite being on set all night, Elizabeth ensured she displayed her signature sartorial elegance, wearing several silver rings and sporting a smoky eye

Explaining the jumps: The beauty practiced her moves as she crouched into a defensive position, under the tutelage of her acrobatic colleague

It looked like hard work, however, and The Godzilla star pulled a few faces as both had their makeup applied and hair put in place.

The confident stunt double seemed to be explaining the moves to the California native in the cold Scottish climes.

Elizabeth has a history of starring in action blockbusters, though she has also proved her mettle in more thought-provoking, indie offerings.

After studying at the prestigious Tisch School of the Arts in New York, the star played comedy romance to perfection in Josh Radnor’s Liberal Arts alongside acting legends including Alison Janney.

Beautiful: The star also displayed flawless skin under her pared-back make-up and wore her brunette tresses in loose waves over her shoulders

Letting off steam: Filming looked like hard work, however, and The Godzilla star pulled a few faces as both had their makeup applied and hair put in place

Going again: Elizabeth appeared to be a little tired after her confident stunt double spent a while demonstrating the moves to the California native in the cold Scottish climes

Happy: The star, who shot to the limelight despite nearly quitting acting during the height of the furore over her sister Mary-Kate’s eating disorder, has been seen looking thrilled at life with her new musician boyfriend Robbie Arnett over the past few weeks

Avengers: Infinity War is expected to be released in 2018, though the plot is being kept strictly under wraps for the moment.

The movie does boast an all-star cast, with Brie Larson, Scarlett Johansson, Chris Pratt and Benedict Cumberbatch all putting in appearances.

Just in case there were not enough stars in the credits, Chris Hemsworth, Bradley Cooper and Mark Ruffalo have also signed on to the Joe and Anthony Russo production.

Secret script: Avengers: Infinity War is expected to be released in 2018, though the plot is being kept strictly under wraps for the moment

A host of stars: The movie does boast an all-star cast, with Brie Larson, Scarlett Johansson, Chris Pratt and Benedict Cumberbatch all putting in appearances as well as Elizabeth

The actress recently returned to social media after a short hiatus.

And early on Monday morning the star uploaded a stunning image of the Edinburgh skyline to Instagram, apparently having shot scenes for the blockbuster sequel through the night on Sunday.

Elizabeth wrote: ‘Finished my first week on Infinity War just in time for the sunrise #avengers #goodnightorgoodmorning?’

Up all night: Early on Monday morning Elizabeth posted a gorgeous sunrise snap of the Edinburgh skyline with the caption: ‘Finished my first week on Infinity War just in time for the sunrise #avengers #goodnightorgoodmorning?’

The star, who shot to the limelight despite nearly quitting acting during the height of the furore over her sister Mary-Kate’s eating disorder, has been seen looking thrilled at life with her new musician boyfriend Robbie Arnett over the past few weeks.

E! first identified Robbie, a vocalist for the indie pop band Milo Greene, earlier this month. A source told the site Robbie is ‘a great guy’ and revealed the couple ‘are in an exclusive relationship and Lizzie is excited about him.’

Elizabeth normally keeps her dating life under wraps, though she was previously engaged to 35-year-old American actor and fashion model Boyd Holbrook between 2014 and 2015.

Glorious cast: Just in case there were not enough stars in the credits, Chris Hemsworth, Bradley Cooper and Mark Ruffalo have also signed on to the Joe and Anthony Russo production