I know the seller for that item I think. Can't remember her handle, but she runs Chic Designer Boutique, in the ebay stores section. She's English, so I'm a bit biased, but I think her stuff's real.
On a sidenote, I saw a girl carrying this in the regular size whilst at work. The colour is stunning! (Well, I don't know if it was real - I don't exactly work in high-end retail - but if it wasn't then it was one HECK of a fake!).