Billie Eilish is 5’4’’ or 163 cm tall and weighs 61 kg or 135lbs. She says she has always had a toxic relationship with her body, which is part of the reason she wears baggy clothes. In order to raise awareness about the fact that no one should have a say about what her body is like and how she dresses, she made a video about body shaming that she often played as the intro to her concerts.