NEW YORK (AP) -- Tiffani Thiessen is probably best known for her role as Kelly Kapowski on "Saved by the Bell," but the actress says she had no idea at that time how popular the teenage sitcom was.

"I mean, I was so young. I was 15 when I started that show," Thiessen, now 39, said in a recent interview.

"I remember Mark-Paul (Gosselaar) and I touring the (United) States and going overseas. ... That was the first time that I realized what an impact that show had when 5,000, 6,000, 10,000 kids were showing up to these malls and these places where we would sit there for hours and do autograph signings and pictures and stuff," she said.

"Saved by the Bell," which also starred Mario Lopez and Dustin Diamond, aired from 1989 to 1993.

The show now airs in syndication and remains a part of the pop culture zeitgeist. Jimmy Fallon tried -- unsuccessfully -- to rally the cast for a reunion in 2009. (They did pose for a People magazine cover.) Justin Bieber wore a T-shirt with the likeness of Kelly Kapowski to the MuchMusic Awards in 2011.

Thiessen is grateful that she grew up in the limelight before TMZ and other 24-hour media outlets and gossip blogs came along on the Internet.

"Thank God I missed that. The photographers that would follow us were like for Teen Beat and Bop [magazines]," she said.