Hey wait! I've seen her! Well, actually they all DO look the same. *grumble*
As for Menoman's comment, I think I disagree. Compromise is, by and large, overrated. In a relationship, I believe that either both people need nearly identical values, or they both need to agree to disagree. Changing ones self for the benefit of another rarely leads to anything healthy. I also think it really sounds like his problem. Perhaps he can elaborate more, but as it stands, it sounds like his SO is comfortable with herself, and he is uncomfortable with her level of comfort. To the OP... dude... you have a woman that IS comfortable with herself. Don't fuck that up. So many females these days have self-image or self-esteem problems due to societal and media pushiness. If she is happy with herself, you should feel extra, EXTRA lucky! Seriously!