I might be wrong on this, but a few years ago when Gustto started out, they had the Gustto city sola bag... and the details on that bag are very similar to the details on this bag.
thank you bet!! That is such a cute bag! Now I'll have to search for that designer! I bet we won't find it though - if Rachel Bilson was photographed w/it back in December, I bet it's an older style. Hopefully, it's a recurring one!
Not a single online site came up in a google search - only articles and blog posts (except a few older ebay posts) - looks like it's very popular w/celebs!! Sienna Miller carried the bag in FACTORY GIRL!