'90210' cast pays tribute to ailing Shannen Doherty

Associated Press
FILE - In this Nov. 3, 2006, file photo, Beverly Hills 90210 cast members, left to right, Jennie Garth, Brian Austin Green, Ian Ziering, Jason Priestley and Gabrielle Carteris attend the Beverly Hills 90210 and Melrose Place first season DVD launch party held at the Beverly Hilton Hotel in Beverly Hills, Calif. Some cast members paid tribute to Doherty Saturday, Nov. 12, 2016, during a cast reunion in Chicago. (AP Photo/Phil McCarten, File)

CHICAGO (AP) — "Beverly Hills, 90210" cast members are paying tribute to ailing co-star Shannen Doherty.

Doherty is being treated for breast cancer and didn't take part in a "90210" reunion panel at the Rewind Convention in Chicago over the weekend.

Luke Perry, whose character had an on-screen romance with Doherty's, told the audience Saturday that Doherty was "a very big part of the success of the show." He added that Doherty is "not doing well right now but sometimes her contributions are minimized."

Fellow cast mate Jennie Garth praised Doherty on Instagram by sharing a picture Saturday with a quote, "Fight Like A Brenda," a reference to Doherty's "90210" character, Brenda Walsh. Garth calls Doherty the "strongest lady I've ever known."