Rose McGowan conan the barbarian red carpet premiere

Conan The Barbarian may be a gritty, violent movie, but that didn't stop the stars from coming out to the movie's red carpet premiere looking fabulous - and, well, very clean.

Rose McGowan plays a witch in the upcoming action flick, but the only thing she cast a spell on Thursday night was Hollywood. She looked like a glam mermaid as she stepped out in a floor-length blue-and-gold sparkly dress and sideswept, long auburn waves.

Other stars joining Rose for the Conan premiere included co-stars Ron Perlman and Jason Mamoa, plus Jason's girlfriend, actress Lisa Bonet.

But one thing Rose wants you to know is that you won't see hunky Jason fist pumping with the Jersey Shore cast anytime soon - he's no juicehead! (Though he is super hot - see pics and the video below!) The 37-year-old actress recently told the Advocate:

    Jason’s a** is epic. When I saw his backside naked, I was like, 'Oh, my. He’s got a beautiful body,' because it’s not all Mr. Steroid. He looks raw and masculine."

Besides talking about Jason's good looks, Rose also admitted to the mag that her life is like The L Word. Find out why she said that ... after the jump.