Imagine telling a Billie Eilish fan two years ago — when she was a 16-year-old burgeoning cult star known for her massive online following, eccentric fashion sense and oddball alt-pop singles — that in 2020, she'd have the kind of Grammy success only one other artist in over 60 years has ever had. They'd probablyeither think you were lying, or assume that Eilish's music and image had taken a wild turn towards the conventional fromthe weirdo teen artist they currently knew.Nope.