‘The Wonder Years’: Why Danica McKellar Won’t Be a Part of the Reboot (Exclusive)

ET spoke with ‘The Wonder Years’ star Danica McKellar, who explains why she and Winnie Cooper will not be returning for the upcoming reboot. McKellar is currently booked and busy as the voice of Miss Martian on Cartoon Network's animated series, ‘Young Justice.’ We’ll learn even more about what’s to come when McKellar takes the panel for ‘DC’s FanDome: Explore the Multiverse’ on Sept. 12.