London, Mar 13 : Sienna Miller will be seen running around butt-naked with two male co-stars in her new film `The Mysteries Of Pittsburgh'.

The actress has stripped off for a spot of skinny-dipping alongside Peter Sarsgaard and Jon Foster, reports the Sun.

American Beauty star Mena Suvari and the infamous Nick Nolte also star in the movie.

`The Mysteries Of Pittsburgh' is a coming-of-age drama set in the 80s against the backdrop of Pittsburgh, Pennsylvania.

Previously, Miller has stripped off for `Factory Girl' and `Layer Cake'. (ANI)