Because she doesn't want to be sexualized by people -- mainly grown men -- on the internet. And It's a damn shame that she has to do that to avoid sexual and harnessing commentary from people, considering she's still a teenager.
And things like this still fucking happen
A TANK TOP! SHE’S BEING SEXUALIZED OVER A FUCKING TANK TOP!
She unzipped her hoodie ONCE and people are saying shit like this. She wears baggy clothes even when it’s hot as hell outside because she doesn’t want people to say shit like this. Yet the moment she unzips her jacket people sexualize and objectify her.
the fact that she steps outside in something that doesn’t look like a king/queen sized bedsheet and is immediately sexualized — and she’s only 17 years old — not even a fucking adult yet! And they defend themselves by saying “ooohhh well she posted pictute on IG and she POSED in baggy clothing TO PROTECT HERSELF FROM BEING SEXUALIZED and yet I’M THE ONE SEXUALIZING HER LMAO.”
Thanks for reading: Why does Billie Eilish wear baggy clothes?, Sorry, my English is bad:)