Shannen, who played Brenda Walsh in the original hit US TV series, has agreed to join her former co-stars Jennie Garth and Tori Spelling for the new program, The CW television network announced on Saturday (July 19, 2008).

Tori, whose character Donna Martin now runs a boutique, can't wait to be reunited on screen with Shannen, saying: "It's amazing. That's probably the best news the fans could ever get. All the girls on the show will be psyched!"

Brenda, who is now a successful theater director, will return to West Beverly Hills High School to stage a musical.

The show's executive producer Gabe Sachs, has denied Shannen and Jennie are already struggling to get along.

He said: "There isn't any tension. No one's been on the set yet but I think they'll be OK. I don't think they've gotten together and had dinner yet."

Shannen left "Beverly Hills 90210" in 1994, amid reports she had fallen out with her castmates and the crew.

After her exit, she claimed she was "miserable" on the series.

When Jennie was recently asked about Shannen's rumored appearance on the new show, she said: "I'm a big girl. I can handle anything."

The new program is set to premiere in September.