Billie Eilish said being "obsessed" with the one-size clothing brand Brandy Melville led her to develop a "whole world of body problems" during her tween years.

At the open of a Billie Eilish concert, a giant light box rises in the arena. "Spoiler alert! I'm in the cube, but you can't see me," she said. "I can literally see everybody so well from inside ...