Danica McKellar, aka Winnie Cooper, Reveals Killer Abs in Avril Lavigne Music Video

Danica McKellar is revealing a, well, revealing new side to herself.



The former "Wonder Years" star, 38, revealed her killer abs while on

the set of Avril Lavigne's new music video yesterday.



"Just had the best time shooting @AvrilLavigne's new video," she

tweeted. "And she is so sweet and fun! Made me feel like a rock star.

;)"