Is this costume too sexy for a teen?

I don’t want to sound like Phill Kline, but check out the teen costume in the middle (click on the photo to make it larger). Saw it in a Party America ad in yesterday’s Kansas City Star.
No daughter of mine would ever show up at her Johnson County junior high Halloween cotillion in fishnets and a short skirt. Am I being too much of a prude? Tell us.