The stars of The Hunger Games movie franchise are dictating hairstyle trends among teens, according to actress Natalie Dormer.

The Game of Thrones star, who will play Cressida in the final two Hunger Games films, had to shave half her head for the role to perfect a punky look and she admits she has spotted young fans with the same 'do'.

She explains, "I was actually quite surprised at Comic-Con, there's a lot of lopsidedness going on. Girls are doing the lopsided thing, very tight... down one side so it almost looks like they're shaved. That seems to be en vogue and I seem to be ahead of the curve.

"I don't know if the Katniss Everdeen (character) thing is catching on as well, but a lot of girls are wearing plaits to one side."