Ranbir Kapoor found himself rallying for a cause while shooting in Dharamshala, Himachal Pradesh for Imtiaz Ali's Rockstar.

The actor was spotted a couple of days back shooting a scene for the film, flanked by Tibetan refugees.

Dressed casually, RK sported a grungy, unshaven look and had a sleeveless leather jacket on. In fact, he even wore a lungi-like robe in stead of pants.

As they say, when in Rome...