She doesn't have a style. She plays dressy up all the time. On Monday she's a lumberjack, Tuesday she's a 50's homemaker, Wednesday a butch leather dyke, Thursday Mary Poppins, Friday a Slone Ranger, Saturday a preteen boy, Sunday a mumsy 40 something. Then the week starts all over with another set of dress up clothes.That jumper was revolting when Diana wore it and its appearance hasn’t been improved by time.
Not only is Jack a begging charlatan she also has appalling style.
She has no idea who she is, and she therefore hasn't ever found a style she is comfortable with. She has no sense of self.