Chloe Grace Moretz impressed with giant co-star

Actress Chloe Grace Moretz has become a huge fan of towering Olga Kurkulina after teaming up with the Ukrainian for a pivotal fight scene in the Kick-Ass sequel.

Kurkulina makes her movie debut as cop killer Mother Russia in the all-action film, and while she might seem imposing on the big screen, her co-star Moretz insists she's a pussycat off-camera.

The teenager says, "They (producers) searched across Russia to find big women who knew how to fight... She didn't know how to fight; she was just huge. She's just a bodybuilder. She used to be, like, a kindergarten teacher or something, she told me.

"She used to do pole vaulting for the Olympics when she was normal size and then she decided to become Olga... She's, like, six-foot-five and then, in her heels, she's, like seven feet. And, like, I think 230 pounds of, like, pure muscle."