LOS ANGELES (AP) - Shannen Doherty has finished filming on CW's "90210," but don't bet that sequel to "Beverly Hills 90210" has seen the last of Brenda Walsh.

"Shannen signed on for four episodes, which she has shot. It was Shannen's way of thanking her fans," said Gary Mantoosh, a spokesman for Doherty. "If the CW comes back with an offer for additional episodes, she's happy to consider it."

In a statement Friday, the series said it would "love for her to do more" and there's "definitely" a possibility that could happen.

In "90210," Brenda returns to alma mater West Beverly High as a theater success who's agreed to direct a school musical.

Meanwhile, the show said that Jennie Garth, who played student Kelly Taylor on the original Fox series and is a guidance counselor on "90210," will add five more episodes to the six she's already filmed.

The next episode, airing Tuesday, has prompted online buzz among fans: In a conversation between Kelly and Brenda, the father of Kelly's 4-year-old son is revealed, and it's someone from her "Beverly Hills 90210" past.

The actresses, who feuded on and off the set of the original show and hadn't spoken in years, have said their reunion on the new series went smoothly despite some pre-filming jitters.

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