Sienna Miller covered herself in cow's blood for a new music video.

The actress stars in a gruesome clip for British rock band The Hours' track "See the Light," which was co-directed by renowned artist Damien Hirst.

Miller appears in a bizarre series of scenes which begin with her wearing a hospital gown and appearing distressed while trying to find her way out of a clothing store.

Later she wanders into a room filled with dripping cow carcasses and proceeds to rub the blood all over her body, before uttering the line: "Death feels like the safest place for me right now."

Click here for more from News.com.au