Danica McKellar's Fishnets Outfit, Flaunts Curves for Avril Lavigne Video — See the Pics!

Danica McKellar, the erstwhile Winnie Cooper from The Wonder Years, was spotted on the set of Avril Lavigne's music video for her new single "Rock N Roll" in some very un-Winnie-like attire.

The 37-year-old teen star turned math whiz sported the teeniest of tiny skirts over fishnet stockings that left zero to the imagination.

Let's just say, the title of McKellar's 2012 opus, Girls Get Curves: Geometry Takes Shape, has taken on a whole new meaning. (Or at least the existing double entendre just got raised to the 10th power.)

Her look is rounded out by a plunging crop top (nice abs, Miss Cooper), an even more cropped denim vest, stilleto-heeled booties and some wacky headgear.

It's like Wonder Woman meets She-Ra meets The Runaways. Surely just as Avril intended.

"Rock N Roll" is the second single off of the newlywed's upcoming fifth studio album. Both Lavigne and hubby Chad Kroeger are among the songwriters listed on the Max Martin-produced track.

But while Lavigne declares in the tune that she's the "motherfreakin' princess"...she better make room for another booty on that throne.

McKellar lends her voice to the animated series Young Justice and she appeared earlier this year on an episode of The Secret Life of the American Teenager.

What do you think of Danica's punk-rock look? Comment..

Avril Lavigne Loves Public Fun

Avril Lavigne and her husbie caught making love in a public park! Or maybe they were just hugging each other? Everybody loves having fun! Humans do it all over the planet: restrooms, Cabs, Tram, stadiums, at the office, on the back seat of the car... you name it! We tried everything! And yes we love public fun!.So yes, it's true, Avril Lavigne loves public sex! Now, as you will see in these pictures, she's more like masturbating – rubbing herself all over her boyfriend,she's was caught doing it in public. Check them out!