Only ebay or from someone on the purse forum... perhaps.
They sold out early March on shopbop.
It's a really beautiful bag. I love the shiny stonewashed effect on the blue leather. It's underrated in my opinion, as it looks much better in real life than in the picture. Also it seems to go with heaps of stuff (kinda like denim jeans). I wish they made more of them!
Thanks for posting this photo. Good to see another celebrity wearing it (apart from Michelle herself).