"Harvey Weinstein, thank God was punished against all odds," she said during a recent public appearance.
The rest of the DWTS cast will be announced in September.
Blair was remembered as a "colorful character" by her Chorus Line co-star Baayork Lee.
Sirico brought both a sense of humor and a genuine sense of menace to his role, emerging from that landmark series as a true pop culture icon.
The young Oscar hopeful and star of Allen's forthcoming 'A Rainy Day in New York' says he doesn't want to profit from his role.
"I mean obviously the concept of TimesUp is a movement so various individuals will be attracted to it, so I don't think there's a vetting process..."
The actor denied knowing about the accusations against Weinstein but said if he did know, the producer would have been in a wheelchair.
Actresses Mira Sorvino, Rosanna Arquette, and Asia Argento gave on-the-record statements about their non-consensual experiences with Weinstein.