The actress, who turned 50 in January, played the bookish Andrea Zuckerman on the series, which ran from 1990 to 2000. She even sought legal advice to make sure she could sign contracts for the show without revealing her real age.
She says, "I actually talked to a lawyer about how could I sign these contracts and lie about my age and still be able to do the show: 'Is it OK?' 'Yes it is, as long as you just say you're over 21.'"
Carteris says her real age was uncovered by a snooping reporter.
She told "Access Hollywood Live," "A magazine that I won't say did an interview on the show and they asked my age and I said, 'I don't talk about my age,' and they found it in the DMV (Department of Motor Vehicles) illegally. I thought, 'This is it. I'm gonna lose the job.' By that time the show had been on long enough, (and) I was OK."