The purpose of this research is to explain the imitative behavior to Korean singers of Thai teenagers, including their attitudes the Korean singers, influence of Korean culture about Korean singers make Thai teenagers have the imitative behavior and consequential problems from their behaviors. The sample group comprises Thai teenagers living in Bangkok, age between 12-22 years old, who are interested in imitated to Korean singers. The study focuses on the imitative behavior such as fashion, dress, hair style. make-up, dance and shopping products which Korean singers are presenters. The research was carried out in two sections. The first part was the qualitative research by using the interview of the group Thai teenagers. The second one was quantitative research by collecting the questionnaire. SPSS program was used as data analysis tool for the quantitative study. The research result was finding suggest that the majority of Thai teenagers has positive attitude in medium level towards Korean singers. The Korean singers have influenced Thai teenagers to imitated Korean fashion, dress make-up, hair style and dance. But Thai teenagers shopping products did not depend on Korean singers who are presenters. Factors such as the Internet, book, magazines, newspaper, Korean movie, Korean song, Korean language and time duration which they have experiences with Korean singers have influenced imitative behavior