Weightwatching superstar Janet Jackson has had all her clothes specially fitted - to stop her from piling on the pounds. The singer, 41, is currently winning a long term weight battle, after years of yo-yoing between fat and thin - and she's determined to stay slim. Jackson says, "One thing that helps is getting my clothes altered to fit so I can tell when I gain or lose weight. "I used to wear overalls all the time, then my mom said: 'Baby don't do that or you won't know how much you lose.'"