The founder of online fashion success story Showpo, Jane Lu, has pulled off a pretty cool prank, and for an even better cause. The Australian entrepreneur released a Facebook Live on Oct. 26 that seemed to showcase a dress which changed colour via an app. Her customers were obsessed, with the video netting tens of thousands views. Comments along the lines of "OMG where can I find this?!" flowed in. Except it wasn't real. That kind of technology doesn't exist (yet).