Why are teens donning knee-highs, plaid skirts and the pricey designs of Tory Burch? Thank the CW’s (CBS) (TWX) Gossip Girl for the newfound preppy with-a-touch-of bohemian style that’s hitting malls nationwide.

As teens tune in to check out the latest styles worn by characters Serena, Blair and Chuck, fashion retailers are seeing serious results. And now that the CW and Gossip Girl are focusing on customization, helping teens mix and match, TheStreet.com’s Kristin Bentz says retailers like Urban Outfitters (URBN) and J-Crew (JCG) are profiting even more.

Check out the video to see how Gossip Girl is changing the face of retail fashion and merchandising.

Thanks to Amanda for sending this in!