By InStyle Staff
Updated Jan 29, 2013 @ 11:29 am
Don Arnold/WireImage

It's not everyday you see Hansel & Gretel walk the red carpet! Stars Gemma Arterton and Jeremy Renner premiered the new Witch Hunters version of the classic Grimm fairy tale last night in Sydney, Australia. Arterton (in star-favorite Erdem) and Renner (in Vivienne Westwood Man) play the titular characters, with a twist: they're on a newfound bounty hunting assignment to hunt and kill witches the world over. The film is currently playing nationwide.

Plus, see more of this week's parties!

Meghan Blalock, with reporting by Brooke Mazurek