If you’ve checked almost any social network in the last few days, chances are you’ve seen weird animated avatars of your friends (or celebrities) singing, dancing or gyrating on stripper poles

All these images and videos have come from MyIdol, a Chinese app that’s blown up in the U.S. It uses your phone’s camera or uploaded photos to transform your face into a wild, animated doppelgänger. But the whole app is written in Simplified Chinese, meaning you’ll have to spend a bit of time poking around if you want to learn how it works.

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