Yes, after stanning the Sorry hitmaker since she was a mere child (even though she kind of still is), the 17-year-old has fulfilled her dreams by collaborating on Bad Guy.
Thats right, the pair have just gone and dropped a remix of the iconic Eilish track – and its everything weve been waiting to hear.
Sharing the news with her 30.3million followers, the Ocean Eyes songstress uploaded a hilarious snap of herself onto Instagram.
Here a baby Billie can be seen freaking out in a rainbow coloured leotard in front of a number of posters of Biebs.
In the caption she wrote: BAD GUY FEAT. JUSTIN BIEBER OUT NOWWW OMGFFFFGGG ANYTHING IS POSSIBLE MAN.
And fans well and truly lost it.
Oh my f**kin god, one wrote, while another excitedly added: BROOOOOOOOO YES SCREAMING FOR U.
Someone else commented: IM SO PROUD OF YOU.
Justin also shared the news by reposting Billies pic.
The superstar has added in his own verse to the track, where he owns being a bad guy, as well as blasting out backing vocals for his fellow musician.
The pair sparked rumours of a collab when Billie shut down speculation she was about to drop another album.
Earlier this week she took to her Instagram story, and wrote: i may have soooomething for you.
She later posted a clip of the track All The Good Girls Go To Hell before writing the words: ok goodnight.
Following on from her post, Justin then took to Twitter where he simply teased: Remix.
More: Justin Bieber
This could have meant anything, but Billies producer and brother Finneas OConnell, retweeted the message – sending fans into complete meltdown.
We sure hope this is the start of many more Billie and Bieber hits.
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