TVB actress Christine Kuo has been ordered to lose weight after she gained 16kg, reported Asian Pop News.The actress, who is rumoured to be behind the break up of Aaron Kwok and Lynn Hung, has seen her weight jump from 52kg to 68kgShe attributed the weight gain to stress and water retention, but TVB has told her to drop 4.5kg in a week.Kuo has also been dropped as spokesperson for slimming company The Beauty. Asian Pop News reported that an insider had told media that the company was worried Kuo's weight gain would affect its business.Kuo has denied that she weighs 68kg and that the slimming company is unhappy with her weight. She said: "I have never heard that the advertiser is unhappy. We are working along well. Although I have not weighed myself, I don't think that I am 68kg."