Elle Fanning had her prom at the Cannes Film Festival.

Elle Fanning

Elle Fanning

The 18-year-old actress had been due to celebrate her senior year but the glamorous high school event clashed with the premiere of her movie 'The Neon Demon'.

Elle decided to go to the French movie festival for the first time, and she took along her school friend so they could have a celebration of their own.

She said: "My best friend who was going to go to prom with me ended up coming, and we had prom in Cannes.

"My best friends aren't in the industry at all. I still live with my family."

'The Neon Demon' sparked a divisive reaction at Cannes, but the young actress would rather people hated the film than didn't really care one way or another.

She told Variety magazine: "Some amazing movies have been torn apart [in Cannes]. But I'd definitely rather have a split response like love/hate than have audiences say, 'Oh, that was fine.' "

Elle wants to go to college eventually, but she's currently too busy with her work, and also has plans to step behind the camera.

The teenage starlet found working with actor-turned-director Ben Affleck on her upcoming movie 'Live by Night' - in which she plays a heroin addict - an inspiring experience.

She said: "I like the idea of forming something that's all your own."

Elle is hoping her movie 'About Ray' will get a cinematic release this year.

In the movie, she plays a female teenager transitioning to male and spent a lot of time with the transgender community to research her part.

She said: "I spoke to a lot of transgender guys, and hearing their stories was really powerful.

"They had so much courage to just tell their story and answer difficult questions."