Changing An Account Name - Possible or Not?

Hello my good Steemians! Please help me out here. I am using my account as an example, though it is not my personal account I am looking to change.

So, I know that you CAN change your display name. For instance in the screenshot above, my display name is Chelsea. If I were to go into my settings I could change that to "Zebra" if I wanted. But my followers would still see me as Hive account@chelsea88 in their list, until they clicked it and subsequently saw that my display name is "Zebra."

So, my question is, how can I change the account name or is that even possible? Thanks in advance!!
Cheers 🍾