Instagram is borrowing another feature from Facebook today, as they are rolling out true people tagging for both iOS and Android.

With the updated apps, you’ll be able to add people to photos for the first time. All you have to do is snap your picture, apply your favorite filter, and in the publishing phase of the process you’ll see a new “Add People” button. From there, you can tag friends, businesses, or anyone and anything with a username.

Of course, you’ve always been able to tag people on Instagram. But before, the tagging system worked a lot like Twitter – you could @ mention users but that’s about it. There was really no way of telling whether the photo’s @ mention was simply there to direct the user to it, or if it meant that user was actually in the photo.

“Photos are memories of the people, places and moments that mean the most to us. We have always sought to give you simple and expressive ways to bring the stories behind your photos to life. Your captions and hashtags capture the ‘what?’ and your Photo Map answers the ‘where?’ but until today we’ve never quite been able to answer the ‘who?’” says Instagram.

All of the photos you’re tagged in will now appear in a new profile section called “Photos of You.” The new feature will have all the same privacy settings of Facebook photos – mainly you’ll be able to control whether or not any tagged photo appears in your Photos of You section. You can adjust your settings to make sure you have to approve every tagged photo before it pops up for everyone to see.

Instagram is giving users until May 16th to familiarize themselves with the tagging feature before everyone’s Photos of You sections go public.

This new feature comes in version 3.5 on both iOS and Android. This update also adds a “report a problem” button to the app and also puts your privacy settings accesible on your profile screen.