The main couple of the series was played by 20-year-old Topher Grace and 18-year-old Laura Prepon. The actors beautifully played awkward and goofy "Eric and Donna" in the throes of teenage hormones.
This hilarious cast played high school teenagers in the throes of puberty but in reality, they were all adults (except one!). Check out how old each cast member was when they first joined the show!
