Billie Eilish is "obviously not happy" with her body

Speaking about body image, she said: "I see people online, looking like I’ve never looked. And immediately I am like, oh my God, how do they look like that? I know the ins and outs of this industry, and what people actually use in photos, and I actually know what looks real can be fake.

"Yet I still see it and go, oh God, that makes me feel really bad. And I mean, I’m very confident in who I am, and I’m very happy with my life … I’m obviously not happy with my body but who is?"

Billie tries to "disassociate" ideas about her body when she's on stage.

She added to The Guardian newspaper: "When I’m on stage, I have to disassociate from the ideas I have of my body. Especially because I wear clothes that are bigger and easier to move in without showing everything – they can be really unflattering. In pictures, they look like I don’t even know what.

"I just completely separate the two. Because I have such a terrible relationship with my body, like you would not believe, so I just have to disassociate … Then you get a paparazzi picture taken when you were running to the door and had just put anything on, and didn’t know the picture’s being taken, and you just look how you look, and everyone’s like, 'Fat!'"