Saoirse Ronan: 'How I Live Now' Premiere!

Saoirse Ronan strikes a pose on the red carpet while attending the premiere of her latest film How I Live Now held at ArcLight Hollywood on Tuesday (November 5) in Hollywood, Calif.

The 19-year-old actress was joined by directer of the flick David Livingston, and Aly and AJ Michalka, who came out to show their support.

PHOTOS: Check out the latest pics of Saoirse Ronan

How I Live Now, centers around an American girl (Ronan) who is sent to the English countryside to stay with relatives and finds herself fighting for her survival as the UK turns into a violent military state.

The action-thriller hits select theaters Friday (November 8)!

FYI: Saoirse is wearing a Camilla and Marc dress, Temperley London jacket, Brian Atwood shoes, Rona Pfeiffer earrings, Carbon and Hyde bracelet, and Jacquie Aiche rings.

10+ pictures inside of Saoirse Ronan and others at the premiere…