I know what you mean. If it looked like she was wearing a great bra or something it might make a little more sense, but because you can see the entire outline of her breasts, it looks off. No matter how tight a shirt is it'll never hug curves quite that well (unless it has some crazy seaming going on).
Yay Kitty! I prefer her all-blue outfit, (I met her originally reading the EXcalibur comics), but it's not like I ever was the biggest fan of those blue & yellow uniforms. One way or another though, Kitty&Lockheed kick butt.