LATEST: Publishers at HarperEntertainment has rushed to slam reports former THE Brady Bunch star Maureen McCormick plans to tell all about a lesbian fling with her on-screen sister. Insiders at the company insist stories suggesting TV's Marcia Brady will come clean about a romance she had with co-star Eve Plumb, who played her sister Jan on the hit show, are pure fiction. A HarperEntertainment spokesman says, "This was just a wild internet rumour. The book has not been written yet."