https://www.reuters.com/article/facebook-instagram-celebrities/celebrity-instagram-content-linked-to-negative-feelings-facebook-researchers-say-idUSKBN2GR2MR >Major social media stars including Kim Kardashian, Justin Bieber and Charli D'Amelio are among celebrities whose Instagram followers experience more negative feelings about their self-image, according to internal Facebook research revealed by the Wall Street Journal this week, raising questions about the impact of celebrity culture online.