The Jonas Brothers got in on the fun of turning themselves old using the FaceApp. The app changes your appearance to look like youâve aged, the trend has been taking over social media for the past few days and the Jonas Brothers couldnât help but see what their 70-year-old appearance would look like. The Jonas Brother captioned their older pictures, âWhen you take a trip to the year 3000.â Have you tried the FaceApp, âOld Manâ feature? Which celebrityâs old look looks the best?