Hi! I'm currently looking forward to purchasing a square mini but as I was browsing through pictures, I notice that some of the bags had a stitching that outlines the flap and some does not. I'm a little bit confused so I was wondering if anyone can explain it to me. Is one a newer style than the other? Also, if any of you own the chanel square mini, do you think it's worth it? Thanks I insert pics as reference to show that one has the stitching and the other does not.