Vanity Fair started doing a yearly interview with Billie Eilish when she was 15. Just a young budding musician then, she had purple hair and 257k followers. Now she’s all grown up, well mostly, 19 and on the verge of 100 million followers. She’s got more Grammy’s under her belt this year, but is also very comfortable with herself too. See the difference from the other years here-

Year Two: http://www.youtube.com/Cm0MGnuRnH0

Year Three: http://www.youtube.com/YltHGKX80Y8

Year Four: https://youtu.be/hS2x1zl4rn0