Billie Eilish. DAVID SWANSON/EPA-EFE/Shutterstock She’s not having it! Billie Eilish shuts down haters who criticize her signature green-and-black hairstyle in the most epic way. On Monday, December 21, the 19-year-old hitmaker took to her Instagram Story to share a story about her dog. But before she got to it, she […]