Billie Eilish has LOVED Justin Bieber ever since she was a little girl! Never did she ever think she'd see the day she got to meet him, AND record a remix to a song of hers! Billie could hardly contain herself! She had this to say on her instagram page: "BAD GUY FEAT. JUSTIN BIEBER OUT NOWWW OMGFFFFGGG ANYTHING IS POSSIBLE MAN." We'd have to say she's certainly living her best life!