At age of 20 , Simon was crowned as Miss Universe 1988 by outgoing titleholder Cecilia Bolocco on May 24 , 1988 in Taipei , Taiwan , Republic of China . She became the second Thai woman to win the title after Apasra Hongsakula who won Miss Universe 1965 . She entered the semi-finals in fourth place , right behind the United States , the Dominican Republic , and Korea . She received an interview score of 9.730 , a swimsuit score of 9.684 and an evening-gown score of 9.752 . Simon became the first woman ever to win both the Miss Universe and Best National Costume award in one pageant
Miss Universe 1965
Miss Universe 1965
Bui Simon