Penelope Cruz was spotted by photographers during a lunch break in between scenes of her latest film, Venuto al Mondo in Sarajevo, Bosnia on Tuesday, September 20th, 2011.

If you notice the grey in Penelope’s hair it’s because the actress is sporting a bob wig for the role that covers up her gorgeous brunette locks while filming.

The drama is based on the best-seller by Margaret Mazzantini and it tells the story of Gemma (Cruz), a single mother who accompanies her teenage son to Sarajevo where his father was killed during the Bosnian war. Emile Hirsch stars opposite Penelope in this Sergio Castellitto directed film.

Penelope recently snapped at a photographer for taking a picture of her with her infant son while touring the historical district of Bosnia. She has since surrounded herself with strong security to escort her and hubby Javier Bardem, especially when they are with their baby boy.

Who can blame her? Every mamma has to protects her young!