Olivia Cooke found shaving her head for 'Me and Earl and the Dying Girl' "humbling".
Cooke plays leukemia sufferer Rachel alongside 'Project X' actor Thomas Mann in the comedy-drama and has admitted shaving her head for the role taught her a lot.
She said: "Sales assistants would follow me around shops thinking I'd steal something when I had a shaved head. And when I 'd leave the bubble of the film set, I started to notice I wasn't getting attention from the opposite sex, which I hadn't realised I was used to. It was bizarre for a while but also humbling. You need a lot more substance than just being pretty to be a good person; it was a coming of age thing for me."
However, the 21-year-old beauty confessed she had "a bit of a meltdown" the night before she shaved off her brunette locks.
She told Marie Claire magazine: "I was meant to wear a bald cap but, two weeks before shooting, I thought about all the bald caps I'd seen in films and how I'd always been able to point them out.
"The night before we shaved my head, I was weirdly excited, and then I had a bit of a meltdown so I had some vodka. I've now got a kind of mullet thing going on."
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