The 27-year old actress, who plays the Black Widow in the flick, says she is pleased to reprise the character - which she first played in Iron Man 2 - even if it meant wearing the hot costume everyday.
Johansson went on to explain that the rest of the cast's outfits were also uncomfortable, adding: "It was kind of an out-of-body experience. Like a dress-up, but to the extreme.
“Everybody looks incredibly uncomfortable until the cameras are rolling. Then we all look badass. And when the Avengers assemble, it feels like being a little kid.
“Then, cut! And we’re all like, ‘Arrgh, God, get this thing off me.’ As soon as everything is cut, everything comes off."
She added: "All our costumes are unzipped, some air conditioning venting unit goes in, someone is having a wig removed... we all have our various things that we have to do to get comfortable.”
You can catch Scarlett as the Black Widow when Marvel Avengers Assemble his UK cinemas on 26th April.
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