LOS ANGELES – Norma Zimmer, the "Champagne Lady" of TV's "The Lawrence Welk Show" and a studio singer who worked with Frank Sinatra and other pop stars, has died. She was 87. Zimmer died peacefully Tuesday at her Brea, Calif., home, Welk's son, Larry, said Wednesday. Larry Welk didn't know the cause of death but said Zimmer had been living an active life in recent years. "She was one of the most gracious, likable people that anyone could ever meet. The other people on the show, to this day, just respect and love her," Larry Welk said.