With the rise of K-pop music globally, there has also been a growing phenomenon of hyper-realistic avatars in girl bands. BBC 100 Women takes a look at the impact of these flawless fantasy K-pop artists - who are available online 24/7, constantly re-invent themselves and are immune to bullying and internet trolling - on their fans, their bandmates, and the real women behind the virtual stars. What are the repercussions of this new digital trend, idolising singers who are all presented as perfect, slim, ageless?