Instagram is adding one of Facebook’s most popular features — photo tagging — to its iOS and Android apps Thursday. You can now tag people in photos, and browse feeds of photos you and others appear in.

Previously, the only way to find out whether a photo of you was uploaded to Instagram was to crawl through your activity feed, hoping someone had mentioned your username in a caption (i.e., @laureni). Likewise, there’s been no easy way to share a photo someone uploaded of you to your own followers; oftentimes, I see friends share screenshots of another user’s photo that they appear in, captioned with the hashtag #regram.

Unfortunately, @mentions will not be automatically converted into photo tags, a spokesperson for Instagram confirmed. If you want to add tags to your old photos, you’ll have to do it manually, one by one.

via Instagram Adds People-Tagging to Photos.