In this July 27, 2015, photo, Giulia Pugliese, 15, right, posts a picture to Snapchat while her friend Isabella Cimato, 17, left, and her cousin Arianna Schaden, 14, look on at Roosevelt Field shopping mall in Garden City, N.Y. Teens aren't roaming around at the mall for kicks during back-to-school. They're researching the looks they want online and follow popular hashtags on social media so they can piece together looks before they get there. (AP Photo/Seth Wenig)
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