LOL, Boxermom, I didn't even notice Hermes in the background, I was so focused on the bag (and her shoes - love them!). Anyway, the caption of the original photo says it was on Madison Avenue in NYC.
The handles and buckle don't really look like RL's. It definetely looks like Tinsley Mortimer's line for Samantha Thavasa for me. Tinsley has been seen in plenty of pics carrying different bags from her line.