This is really difficult to answer unless there is anyone on here who has somehow been both and has noticed a difference.
It's such an interesting thread.
I consider myself to fall into the category of a person who has been both unattractive and then "attractive" (quotation marks there so as not to big myself up)
I went through my early adulthood with tattoos, nose piercing, bad hygiene looked rather scruffy, and I tell you I got blamed for so many things that weren't connected to me at all in the slightest, various thefts, friendship fallouts, things I had no idea had happened were apparently my fault. I seemed to be the one person that problems could be explained away just by my very existence.
Then I lost weight, dressed more smartly got into makeup, had a bit of a makeover.
My internal character has never changed.
I've always been a person who treats people fairly, with respect and decency, but at the same time I'm still a normal person with flaws and emotional reactions like anyone else
The only thing that has changed is the way I dress, my figure and the way I wear my face.
I must say since I started looking more "standard" I haven't had near so many problems as before.