It's possible, but when I first saw it I thought it might have been from Zara or Forever 21, more so Zara because I've read she shops there a lot. The material of the bag looks like it would be pleather more so than leather to me.
Hi i was browsing some site and they are were having a sale for marc new york bags. I happen to see this bag which was similar and they have it on ebay too. Hope that helps (: