i know in her Laguna days she had the coveted Melie Bianco hobo bag everyone wanted ... id say possibly check out that site? http://www.meliebianco.com
I'm pretty sure it's a Juicy Couture from a few seasons ago. It came in black leather and a tan/cognac color. There are two strips of leather hanging from the sides, with a gold fringe (made from chains, but very thin and fine).
For reference, here's a closed eBay auction with the bag: