Was born in Macau (a Portuguese colony at the time) and is of mixed ancestry -- her father is Portuguese and her mother is Chinese. She attended Maryknoll Convent School, and matriculated from St. Paul's Secondary School.
Reis started modelling at the age of 14. She first came to fame when she won the 1988 Miss Hong Kong Pageant at the age of 18 and was also the first Miss Chinese International in the same year. Following her Miss Chinese International crowning, she went on to participate in the Miss World 1988 pageant, where she promoted the image of Hong Kong. She was then supposed to compete in the Miss Universe 1989 pageant but withdrew due to health problems.
Reis married business tycoon Julian Hui on 23 November 2008. Julian was formerly married to Pansy Ho, the daughter of Macau casino businessman Stanley Ho.
Reis gave birth to a baby boy, Jayden Max Hui, on 8 February 2011.