This research uses qualitative approach and case study method to discuss sexism in online media reporting of online prostitution cases involving female celebrities in Indonesia. The purpose of this study is to explain how sexism involving female celebrities is featured in the news media online news sites. Primary data collection method is done with in-depth interviews and observations on two national online news sites, namely Detik. com and Tribunnews. com. While the secondary data collection method is done through in-depth interviews with online media policy managers. News analysis was carried out using the Gamson and Modigliani framing analysis methods. The results found that female celebrities who became online prostitutes were displayed as sexual objects and as news that was out of context and tended to be sensational. The reporting of these cases generally uses sexist words. This research also shows that online media coverage still lacks gender sensitivity.