Teen Vogue is beefing up ad pages by opening a pop-up shop at a mall in Short Hills, New Jersey. But merchandise won't be for sale. Instead girls can stop by to relax, try on clothes, play with makeup, charge cell phones and iPods, and drink smoothies. Some Teen Vogue advertisers featuring wares in the space were asked to buy an extra ad page or two to participate. The magazine plans to open more pop-ups around prom season and in August for back-to-school. [NYT]