After glamming it up last night for the Phillip Lim party, Rachel Bilson kept things casual as she stepped out in Hollywood today (July 16).

The former OC cutie looked like a country cutie in an adorable red floral print dress and a pair of black boots while heading to lunch with a non-celebrity pal.

Meanwhile, the part-time actress/fullt-time fashionista will soon begin promoting her upcoming romantic flick, New York, I Love You, which is a collective work of eleven short films. From the producers of Paris, je t’aime, it stars an ensemble cast, among them Shia LaBeouf, Natalie Portman, Hayden Christensen, Blake Lively, Orlando Bloom and Christina Ricci. The film premiered at the 2008 Toronto International Film Festival last September.