There's nothing like the perks of friendshop: Rachel Bilson shouldered pal Zac Posen's frame bag for an afternoon of shopping in Beverly Hills.
BUY RACHEL'S BAGZac Posen leather Abbey handbag, $1500; at bloomingdales.com. Five stylish stars, one winner. Whose outfit do you like best? Vote now!VIDEO: Take a closer look at the January issue of In Style.Read MoreLess