Stars are not born; they are created through a long and tortuous process of trial and error.
When conjuring our favorite star we remember an iconic image that captures that personae. When we think of Jean Harlow we see her glowing platinum hair, a fetching body draped in silk, and a come hither look that melts the soul.
We want to believe that stars were born fully formed. And when that image is challenged we feel disoriented if not slightly betrayed.
In truth, the best kept secret in Hollywood is how hard everyone works to perfect the images that are projected. I can testify from years of experience on location that we spend 80% of our prep time making sure the leading lady looks exactly as she should.