ABSTRACT Teenagers have the concept of an ideal body image by interacting with the social environment in the form of social comparisons with other people.Social comparisons were measured using the Upward and Downward Physical Appearance Comparison Scale from O'Brien., et al. (2009) and body image was measured using the Multidimensional Body Self Relation Questionnaire Appearance Scale (MBSRQ- AS) from Cash (2000).This is because TikTok is one of the tools that helps relieve boredom during social goals due to the Covid-19 pandemic.Tik Tok is one of the video-based social media that is currently booming and loved by teenagers.This research is to find out the relationship between social comparisons and body image and find out the differences between hoys and girls in doing social comparisons and body image.The research subjects involved 62 respondents.