Sorry for my ignorance, but I'm not familiar with Genshin Impact, could someone explain to me this recurring theme of Clorinde popping the buttons on her shirt?

There's nothing to explain.
She just wears a tight shirt.

MANAZE said:

Sorry for my ignorance, but I'm not familiar with Genshin Impact, could someone explain to me this recurring theme of Clorinde popping the buttons on her shirt?

https://www.instagram.com/p/CvjoZ4Htgkc this is why