Ah, Twitter, the place where celebs come to feud, flirt and (all-too-frequently) overshare all about their already exposed lives. But not everyone in Hollywood has hopped on the bandwagon, and even some younger stars right in the middle of the technology-hooked generation have opted to stave off the social media site.
So don't be alarmed if Jennifer Lawrence isn't giving live updates about her wardrobe choices and Chris Hemsworth is not sharing what he's doing this very moment -- they simply don't have Twitter accounts (or at least ones that Twitter has officially verified) and neither do these other 30-and-under celebrities who are young, famous and tweet-free: