Warning to teens everywhere: this might send you into a fangirl frenzy!
This is not a drill!
The Australian singer posted a pic on his Instagram (above) on Monday of the three musicians chilling together, captioning the photo:
But it gets SO much better than a simple shot.
The 18-year-old also shared a Snapchat video of them all jamming out! Listen to the Biebs sing while Cody strums the strings (below)!
[Image via Cody Simpson/Instagram.]