Sienna Miller's Mysteries of Pittsburgh

Costars Sienna Miller (in Marios Schwab) and Peter Sarsgaard rub shoulders at a screening of their new flick, The Mysteries of Pittsburgh, at the Landmark Sunshine Cinema on Tuesday (April 7) in New York City.

Love the detailing of Sienna‘s dress!

The Mysteries of Pittsburgh stars Jon Foster as “Art”, Sarsgaard as “Cleveland”, Sienna as “Jane”, Nick Nolte as “Joe” and Mena Suvari as “Phlox”. For more info, visit MysteriesOfPittsburgh.com.

25+ pictures inside of Sienna Miller‘s Mysteries of Pittsburgh…