Tiffany Thiessen

Tiffany Thiessen

Tiffany Thiessen is scuppering plans for a full-cast reunion of TV show Saved By The Bell, according to reports.

U.S. talk show host Jimmy Fallon has launched a campaign to reunite the characters from the iconic 1990s kids show.

He has so far convinced Mark-Paul Gosselaar, Dennis Haskins and Mario Lopez - but has hit a stumbling block over Thiessen, who went on to star in Beverly Hills 90210.

A source tells Us Weekly, "In her mind, a reunion would remind audiences she hasn't done anything for years. We're trying to get her to do it because it would actually be great for her career."

Mark-Paul Gosselaar has backed a campaign to reunite the cast of the hit teen show Saved By The Bell - by appearing on U.S. TV dressed as his beloved character Zack Morris.

Talk show host Jimmy Fallon and actor Dennis Haskins, who played school principal Mr. Belding, demanded the series to be brought back during a recent episode of Fallon's Late Night talk show.