It wasn't political ideology or a drastic life change that inspired Kristen Stewart's new shaved head — the actress has explained the cut was simply a matter of practicality.

In a new interview with TodayStewart explained her new buzzcut — which she showed off for the very first time at the premiere of new film Personal Shopper — is part of a strategy to save time. Stewart plays an underwater mechanical engineer in the film, and said the prospect of putting a helmet on and taking it off — all while worrying about the state of her long hair — wasn't something she was interested in dealing with.

"It's practical," she said, adding that the style was by no means mandated by production. "I mean, I'm not going to be able to have touch-ups once they put the helmet on my head."

"I've been wanting to do this for a long time, just for novel sake. It feels amazing,” she added. “I just want to head bang all day."

Stewart previously told Into the Gloss in a 2014 interview that she was adamant about eventually shaving her head and adding to the bold look with a little ink.

"I'm definitely going to shave my head before I die,” she said. “I will definitely tattoo my head while it's shaved before my hair grows back. I'm not sure which part, probably the bottom quadrant in the back. I don't know what the tattoo would be, yet. Still thinking."

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