It's a changeling who looks like Rarity. I don't recall what the last one looked like.
The questions that come to mind are
-Is this an alternate universe Rarity?
-Is this a changeling doing a bad imitation of Rarity?
-Did Chrysalis take over the world and turn everypony else into Changelings?
On a more relevant topic, my legs are so friggin' irritated after I've shaved them. This is very not pleasant. I'm not really sure what to do at this point.