Since joining Miss Hong Kong beauty pageant in 2011, Giselle Lam had gained around 10kg in three years, and was at her heaviest three months ago, said ON.CC.
The mother-of-one attributed the weigh gain when she became less active and started to accumulate fats in her body, especially in her thigh area.
With plans to break into Mainland China's entertainment industry, the Hong Kong former beauty queen decided to work on her physique.
With the help of slimming tools, she managed to lose 4 cm.
Slim women are said to have a long career in showbiz.
She hopes to work with Chinese actors Xu Zheng and Wang Baoqiang in her next Mainland project.