LOS ANGELES (Reuters) - Queen of disco Donna Summer, famous for her 1970s hits like "Hot Stuff," "Last Dance" and "She Works Hard for the Money," died on Thursday at the age of 63, her publicist said. No cause of death was given but celebrity website TMZ.com said Summer had been suffering from cancer, and died in Florida. "Early this morning, surrounded by family, we lost Donna Summer Sudano, a woman of many gifts, the greatest being her faith. ...