Teen fashion tends to change at a breakneck pace, but the media that cover clothing styles for girls ages 13 to 19 have shown some surprising stability.

Print outlets like Seventeen and Teen Vogue remain incredibly influential, notes Chet Gulland, account supervisor at Fleishman-Hillard NGT (Next Great Thing).

"There's still a ritual happening where a teen girl will sit in her room and riff through a magazine," he explains.

But Gulland says teen fashion media and PR have been hugely ...