This Hallows' Eve, sport your true techie self! These all-too-familiar costume s will definitely turn heads. Social-media-obsessed teens will be dying to take a self-destructing photo with you, Snapchat. Cute singles would love to be your match, Tinder. Hipster couples will want in on your cool filters, Instagram. In these app getups, you won't be able to walk down the street without someone trying to "double tap" that. Plus, they're all DIYable!