Like most things popularized on TikTok, VSCO girls seemed to pop up overnight. Or, at least the term for them did. They may have existed for much longer — recognized by their breezy, "California casual" style that is actually super expensive to replicate. They were eventually deemed VSCO girls because many of them use the photo-editing app VSCO, which is known for its beachy-vibe photo filters. But you don't have to be on VSCO to be a VSCO girl, and you can even be a temporary one with a VSCO girl Halloween costume