Billie Eilish has shared her reaction to watching her upcoming documentary for the first time, saying she “cried out of joy”.The teen pop star’s life and career so far will be opened up to her fans later this month with the arrival of the Apple TV+ documentary The World’s A Little Blurry.In a new clip promoting the upcoming film, Eilish spoke about the experience of watching the documentary for the first time. “We were in my living room,” she said.