Rachel Bilson turned up in the front row at Roberto Cavalli's Spring 2011 runway show during Milan Fashion Week alongside country crooner Taylor Swift (in knee-high lace-up boots), British singer Leona Lewis, and supermodel/"PR" hostess/activewear designer Heidi Klum.

The former "O.C" actress supported the Italian designer by pairing one of his creations -- a large structured leather purse with leopard lining -- with a long, black blazer and Cavalli multi-patterned dress.

She toughened up the look with a studded bracelet and black lace-up booties.

Bilson keep her ombré locks loose and effortless, while opting for gray nail polish.

In related news, check out our top 10 looks from Milan Fashion Week.