Sarah Michelle Gellar at the 'Southland Tales' premiere as part of the AFI Film Festival at ArcLight Theaters. Los Angeles, California - 02.11.07

The series, which ran for six years, was originally adapted from the 1992 film of the same which starred Kristy Swanson in the title role - but Gellar insists she would never take part in a second big screen version.

Gellar is convinced the show's ending was good enough and it would be hard to better its conclusion.

She tells Moviehole.net, "I have to be honest. That thought really scares me. Buffy was a movie and it didn't work because her story was longer than that. This was about a girl that you had to get to know and it took so long to figure out how to crack the ending so that people weren't upset.

"Of course I never say never, so I'm not saying no, but my fear would be to open something like that up again, to only end it again."

Source: WENN