Having a marvelous time as she joined in on the annual cinema celebration, Emily Blunt was spotted keeping busy in Park City, Utah during the Sundance Film Festival this weekend.

The 28-year-old actress kicked things off by joining co-stars Rosemarie DeWitt and Mark Duplass at the ‘Your Sister’s Sister’ premiere held at The MARC Theatre on Friday night (January 20).

Letting loose at the Acura Studio afterparty following the film’s screening, Miss Blunt stepped out the following day for a “Your Sister’s Sister” press junket at Bing Bar while also taking part in a portrait session at the T Mobile Lift with Rosemarie, Mark and writer/director Lynn Shelton.

Expected to hit theaters this summer, “Your Sister’s Sister” is a dramatic comedy in which “Iris invites her friend Jack to stay at her family’s island getaway after the death of his brother. At their remote cabin, Jack’s drunken encounter with Hannah, Iris’ sister, kicks off a revealing stretch of days.”