Actress Yao Chen is another step higher on the A-list club. She is now the brand ambassador of Zhonghua Toothpaste, a Shanghai brand bought over by Unilever in 1994. Yao, who is famous for her iconic big smile, is very successful in acting, but not in the commercial world. She had shot an ad campaign for a website, which was considered a failure. It might work better this time. Yao says it is her positive image that won her the opportunity of the lucrative endorsement of the toothpaste brand. The actress also announced that she was pregnant.