My daughter has the real ones, I noticed right away that Izzy's are fake, they're too big, none of them come in that size, they look ridiculously big, in real life they are quite dainty. They came in a box, not on a piece of card, and in a Vivianne Westwood bag (I bought them from Fraser's in Glasgow, a store that sells designer items). She also has the pearl style necklace, which also came boxed. There's not a rats ass chance in hell they'd but them the genuine ones if replicas were a 10th of the price. You can buy the fakes for a tenner (probably less on some websites). Their ears will all be green within a couple of days, the real ones aren't gold or silver but they're at least made from a metal which should last even a couple of years.
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Esme's look genuine, Izzy's definitely dont