Mischa Barton can't get enough of her new Zac Posen Alexia Bag—seriously, every time the girl has been photographed lately, she's been carrying this bag. But can you blame her? The giant frame bag really is fabulous, from the sturdy strap to the cool hexagonal closure and the edgy chain accent. You can buy it for $1,250 here.
In fact, if the OC girls are any indication, it seems that Posen may have achieved "It Bag" status. Mischa isn't the only young starlet who's been seen toting one of his designs. To see who else loves Posen handbags, read more
Yep, it's Rachel Bilson, who has been spotted carrying the smaller but just as fab Zac Posen Aurora Bag. It's tougher to find online, though you can buy it at Bergdorf Goodman stores. Also, there is currently a black-and-white Aurora for sale on eBay here.