Guillermo del Toro always has a few projects up his sleeves, but when he's not working on his own films, he's producing creepy little movies like last year's 'Don't Be Afraid of the Dark,' and the upcoming 'Mama.' Check out the first official trailer for 'Mama' and get ready to hide your eyes.

Guillermo del Toro is hard at work finishing 'Pacific Rim,' but in the meantime, he's produced a brand new creepy thriller titled 'Mama,' starring Jessica Chastain and Nikolaj Coster-Waldau in the tale of a couple who open their home to two feral little girls found abandoned and alone in the wilderness. The little girls had been by themselves for five years, and developed some rather unsettling habits -- namely, scurrying around on the floor like animals, chewing on each other's hair, and talking to the walls. The girls perpetually whisper "Mama," and like the tagline says, "A mother's love is forever," so maybe Mama never really left.

Chastain is almost unrecognizable in this trailer, with short dark hair and heavy eyeshadow, rocking a significantly edgier look alongside co-star Nikolaj Coster-Waldau, whom you may know from HBO's 'Game of Thrones.'

'Mama' is directed by Andres Muschietti and from this trailer, it seems to fit well with Del Toro's line of "Guillermo del Toro Presents" films. Lots of eerie whispering and children getting creepy. We approve.