Instagram is currently testing a new feature that allows you to add a friend to your live stream broadcast via split screen.
All you have to do to utilize the tool is tap the double smiley face icon located in the bottom right corner, then select a friend that you would like to include. This will in turn split your screen vertically.
Just like the usual live mode, you can receive hearts and comments and save the post to your story after you're done.
For now, Instagram is merely testing the update with select users, but look for a wider rollout to take place in the coming weeks/months.
In other social media-related news, Apple has finally made an official Instagram account.