That purse caught my eye as well. I believe it was the Gucci Jockey Hobo purse. The large is around $1350, and the med. size is $895.00. I think she was carrying the large one.
Along with the Jockey hobo, she also wore the large Charlotte hobo with white trim... I heard the Jockey in that color went on sale last spring, but the Charlotte might go on sale in June!!!