Ever wonder how you'll age? A new viral app just took the guesswork out of it, and stars (from Hollywood and Bollywood alike) are joining in the fun. While celebrities are usually airbrushing out wrinkles, these stars have embraced them, thanks to FaceApp. Users can upload a photo of themselves or snap a picture and, within seconds, see how they might look decades down the line, courtesy the app's built-in filter. 

We've rounded the best celebrity ones for your viewing pleasure.

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