The phrase "one's original appearance" refers to how someone looks naturally, without any changes or alterations. It describes a person's natural or initial physical features before any modifications or enhancements. Full definition
The trench - look design has a simple yet very original appearance. (fashiongum.com)
Well many sites are added to save new functions or change original appearance (aka GUI - Graphical User Interface) and focus. (pillowspot.com)
These were the sorts of questions I was trying to address in The Big Time, and I believe they are even more pressing now than on the day of the book's original appearance. (fortune.com)