Yep, it looks like the two partied together last night at Calvin Harris' Las Vegas nightclub show, and they launched their sure-to-be-epic new BFFness in a pretty excellent way.
The "Orange is the New Black" star-slash-DJ shared a video of the girls hanging out together in festive tiaras (yes). But it wasn't exactly intended to be a video at first. See, they originally tried to take a fun selfie together to document all the awesome at play in that moment, but Rose had inadvertently hit the video record button. When they realized the mobile mix-up, they just went with it because they're both too cool to sweat the small stuff like that.
This wasn't the only footage from all the fun, either. Here's another capture of them all jamming it out to none other than Harris' own tune "Sweet Nothing" with Florence Welch.
Swift's brother Austin shared this behind-the-scenes shot of Calvin turning tables to ring in 2016, just hours after Tay launched her newest music video for "Out of the Woods."
If all of this is any indication, 2016 should be another year of Tay slay, which is more than OK.