DAWN OF THE DISH

“Sister, Sister” star (below) took part in a grand promotional gimmick on Sunday and came out squeakyclean. The actress hosted a dinner in Lambertville, N.J., population 3,906, where everyone was invited to a threecourse meal at a 2,000foot-long table at City Hall. When it was over, Dawn soap cleaned 6,000 plates with a 21.6-ounce bottle.