Leonardo DiCaprio showed up at the "Shutter Island" photocall in Rome on Feb. 8 looking great, as usual. Who doesn't love those baby blues? See more photos after the jump!

The actor became a mental illness expert while researching his new thriller by spending hours watching dark documentaries. He told WENN, "For a few weeks there, it was some of the most hardcore film experiences I've ever had. It was like reliving trauma in a way. It was pretty intense."

In the film, Leonardo and Mark Ruffalo team up as a pair of U.S. Marshals who travel to a secluded island off the coast of Massachusetts to search for an escaped mental patient, uncovering a web of deception along the way as they battle the forces of nature and a prison riot.

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