‘The Wonder Years’ Star Danica McKellar and Her Abs Star in Avril Lavigne’s New Music Video

at 2:00 pm | By

Hello, Winnie Cooper.

Some two decades after The Wonder Years bid adieu to the world of television, Danica McKellar has surfaced… for Avril Lavigne.

On Thursday, the ladies were spotted on a Los Angeles lot in full costume to film the music video for Lavigne’s new single “Rock N Roll.” The track is from the Canadian singer’s upcoming fifth studio album (and yes, it was co-written with her new hubby Chad Kroeger).

While Lavigne stuck with an army green dress and knee high boots, her co-star turned heads with an outfit that put her rock hard abs in the spotlight.

McKellar, now 38, owned it in a mini denim vest, a crop top, blue fishnet stockings, a short black leather skirt, giant hoop earrings and orange boots.

For those who haven’t kept up with all things Winnie Cooper, McKellar is a mother of one, is recently divorced and has written a number of math books for adolescent readers, including the 2012 release Girls Get Curves: Geometry Takes Shape.

Launch the gallery, above, for more set photos from Avril Lavigne’s music video.

[Lead image courtesy of Twitter/Avril Lavigne]