If you’re like most people, you probably have an Instagram account. But if you don’t, or if you only have an email address for your account, there’s a good chance that someone has taken your username and used it on their own account. So how do you find someone’s Instagram username? The first step is to open up your Instagram app and look for the “user name” tab. There, you’ll see a list of all of the people who have signed in to your account. If there’s a person on that list with the same name as yours, then it’s likely that they’ve used your username on their own account. The second step is to check out other people’s accounts and see if they’ve used your username. If they have, then you can be sure that someone else has borrowed your account and is using it without permission. To find out who borrowed your account and when, just go to the “account history” tab in the app and look for the date that the username was borrowed.