Her being proud of how she looks isn't really what I was getting at. More like, doing the best she can with what she's got. Right now.
I mean, I was fat in highschool. I always wanted to be a cheerleader because I loved sports and the atmosphere around games, but had no athletic capacity to speak of. I decided to brave the possible dirision from others to do what I wanted to do. When I started cheering, I did realize that being in better shape would make me even better at it, so I lost weight. It wasn't about me saying, HEY, the fact that I'm fat is AWESOME, and my goal is to be a fat cheerleader! It was that I didn't want to wait until I was thin to do what I wanted to do, even though some people probably thought I had no right to put on a uniform at my size.
She's got music to share. She's doing it NOW, because what's most important to her is sharing that music, not necessarily how she looks while doing it. If she saw herself on camera or on stage and decided she'd have more confidence in sharing her music if she plumped up her lips a little or made her nose a little more proportional, so be it. She's an entertainer. They'll do whatever it takes to make it easier to show their stuff.
I guess I just don't understand the level of malevolence about her looks. If you don't like her music, that's one thing, but who cares what she looks like? If you hate her music, but she was "pretty", would that make her music better?