Thought you'd be interested in this: http://www.pokecommunity.com/showthread.php?p=8309358#post8309358
Apparently, there is a chance that the Vivillon you have is a hacked version. If you can get one with a different date, we should replace the one we have with that.
Apparently, there is a chance that the Vivillon you have is a hacked version. If you can get one with a different date, we should replace the one we have with that.