You know when you see someone wearing a scarf in the summertime, or inside a well heated building? You can blame the 2000s for that one. Keffiyehs or circle scarves, there's little question that the rise of hipster culture is the genesis of this temperature defying trend. Like a necklace, the most common way to wear this style would be with a simple T-shirt and skinny jeans. While this was certainly more rampant during the '00s, in no way has this trend died out. One trip to a Brooklyn dive bar with live music, and you'll stumble across this at some point.