Amber Heard provided a behind the scenes glimpse into what it was like wearing Mera's Atlantean costume for the production of Justice League.

The brief video, shared to the actor's Instagram, showed that the costume was not as graceful to move in as it appeared in the water onscreen. She struggled to stay on her feet as the limitations of the costume became awkwardly apparent. Leaning against a counter, she appeared to struggle to bend her legs as required and was forced to rock herself forward. This resulted in her knocking a beverage to the floor, which she then proceeded to struggle to pick up.

RELATED: Justice League Propels HBO Max App to Record Numbers

Heard appeared in both versions of Justice League, her character fighting alongside Jason Momoa's Aquaman. In both scenes she fights to keep the Atlantean Mother Box away from Steppenwolf. Zack Snyder's cut depicted Mera differently, extending her fight scene with the addition of her manipulation of water to begin drawing the blood from the villain's body. While her outfit was the same in both versions, her voice was drastically different, as she used a British accent in Snyder's cut.

While many of her scenes occurred floating in the water, hiding the restrictiveness of her costume, she also returned  in the Knightmare epilogue. The scene was on dry land, but the only shot of her walking in costume was obscured behind Ray Fisher's Cyborg, so it was unclear if the movement difficulties persisted.

When Heard returned to reprise her role in the standalone Aquaman film, her costume had been significantly altered. Not only was it a more vibrant shade of green, it had shed most of the armor plating from the Justice League, appearing far more flexible as a result.

Heard is not the only one to struggle with the complications of superhero costumes, although they may become the envy of cosplayers. Many actors have reported that their costumes were a challenge to wear, such as in Michael Keaton's Batman. His costume allowed for extremely limited neck movements, which showed in the performance as his Batman always turned his entire body to compensate. Many actors also lament that their costumes are hot and provide little breathing room, and that it often takes quite a bit of time to get in and out of costume.

KEEP READING: Zack Snyder's Justice League: Superman's Reason For the Black Suit Makes No Sense

Source: Instagram