Turns out a Prince tribute wasn’t the only new feature Snapchat had in store today: an update is rolling out to iOS users allowing them to face swap with any photo in their camera roll.
Now when you enter the masking features – long press on a face during the capture process – you’ll see a second face swap button show up next to the original. The new one is purple and includes a little camera icon to indicate you’re swapping with something from your camera roll.