Hemsworth: Miley 'better watch' The Hunger Games

Aussie star of The Hunger Games Liam Hemsworth really wants girlfriend of two-and-half-years Miley Cyrus to get into the new teen sci-fi phenomenon.

"Well she didn't know about it until I got attached to it," Hemsworth told E! Online last night at a party in LA. "And then she read the book. I hope she liked it. I don't even know. She better watch it!"

Surely he knows whether she liked the book or not! We hope she doesn't make him watch Hannah Montana...

Miley's opinion aside, 22-year-old Liam is game to do the expected Hunger Games sequels.

"If it does as well as everyone's expecting it to do, then I imagine they'll go ahead," he said. "I love the books. The books are great, so if we get to shoot all three films I'll be really happy."

Liam plays the part of hunky hunter Gale, the third wheel in the love triangle between Katniss (Jennifer Lawrence) and Peeta (Josh Hutcherson) in the soon-to-be-massive blockbuster.

Cyrus's boyfriend is about to be as big as his Thor-some brother Chris, starring opposite Arnold Schwarzenegger, Sylvester Stallone, Jean-Claude Van Damme and Bruce Willis, among other action greats, in August's The Expendables 2.

"It was pretty amazing," he said of his Expendables 2 experience. "I grew up watching all those guys and I remember just sitting on set the first day and I had this scene where I had a bunch of dialogue and it was just my character talking in front of all these guys … I was like, 'Oh my god. I'm sitting with some of my biggest action idols that I'd grown up watching and now I'm on set with these guys.' It was a real pinch-yourself moment."

Hemsworth is also slated to star in Empire State with Dwayne 'The Rock' Johnson, and Arabian Nights, with Johnson and Sir Anthony Hopkins rumoured to be attached (yeah, weird combo).

The Hunger Games is out March 22.