Danica McKellar was already famous by the time the 90s rolled around - her success in "The Wonder Years" made sure of that. Most people remember her as a child star, but she looked younger than she was - a fact that allowed her to play roles below her age well into her 20s. Because she was working from such a young age, her character's first kiss with Kevin Arnold on screen was Danica's first kiss in real life.
All grown up now, on her second marriage and with a child of her own, Danica looks very different as an adult than she did as a child, which you might expect. She's a fascinating individual and is exceptionally gifted at math, having authored several well-respected theses on the topic. She keeps her hand in at acting, regularly appearing in TV movies for the Hallmark channel, but spends a lot of her time promoting education to young people, especially young girls.