It's hard to believe "Wonder Years" Winnie is 35 ... and pregnant! Danica McKellar announced that she and husband Mike Verta are expecting their first child this fall.
McKellar tells People, "I'm nearing the end of my first trimester and I'm so excited -- I've been bursting to tell people!"
"When you do take the home pregnancy test, it doesn't quite seem real," she revealed. "But when you see the baby and the heartbeat on the ultrasound, it's so incredible. Me and Mike looked at each other and we could not stop the tears. We are so happy."
McKellar, a mathematician, is also known as a successful author of several books. Her newest, Hot X: Algebra Exposed, will be released this August.