When you create a regular post or a story post, you’ll see new options to share them to your favorites. When you do, the post will be visible only to the people on your list — and is denoted by a green “favorites” badge on the post. Your Instagram profile also gets a new favorites tab, denoted by a star, that contains all the non-ephemeral posts you’ve shared to your favorites over time.
You can add or remove friends from your favorite list at any time and no notifications are sent for either action. Those on the list will only know they're your favorite when they see a green 'favorites' badge at the top of your post. You can't request to be a favorite and if you remove someone from your favorites they will lose access to all your private posts.
The feature is being tested with a small percentage of users starting today and should be rolled out to more users in the coming months.
You can download Instagram from the App Store for free.
Download [via Verge]