Chappell Roan has posted on TikTok about "creepy behaviour" she's experienced in person and online. She’s one of this year’s most successful popstars with a growing fanbase, but are some of those fans starting to overstep the mark?

Pete Allison, our BBC Newsbeat reporter, tells us what Chappell has been saying.

We also look at K-pop fandoms with our Bilingual Reporter, Julie Yoonnyung Lee. There’s even a word in Korean to describe an obsessive fan who invades the privacy of a star - sasaeng.

And Veronica Lamarche, a psychologist who has done studies on parasocial relationships, tell us what signs to look out for that your interest in a celeb has turned into an obsession.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 0330 12 33 22 6 Presenter: Alex Rhodes Producers: Emily Horler, Benita Barden and Emilia Jansson Editor: Simon Peeks

Are we too obsessed with celebrities like Chappell Roan? 13:35 Share

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Are we too obsessed with celebrities like Chappell Roan?