Singing sensation Billie Eilish joked that her fans might have 'forgotten' her as she debuted her bold new hairstyle on Instagram with a cheeky caption.The What Was I Made For? singer, 21, revealed her edgy new do' with her roots dyed a bright red colour.The rest of Billie's hair remained her signature black shade and she wore her locks in two funky space buns. Billie's quirky caption accompanying the new snap hinted that she wondered if her 109 million Instagram followers had forgotten her as she wrote: "Remember me?" But this isn't the first time the Grammy winner has experimented with her hair as she's known for changing up the colour and style.