For those who don't know, Billie Eilish is basically the biggest Belieber of all time! She even admitted to having the biggest crush on him when she was "like 12". All this week, there have been rumblings of a collab in the works especially after Bieber tweeted just one word, "Remix", and Billie's brother/producer retweeted it. And now, ladies and gentlemen, here we have it...."Bad Guy" remix ft. Justin Bieber!