This is my favorite pic so far. While Christopher Reeve had plenty of physical similarities to Superman, the main thing he had going for him was complete confidence while wearing the suit. He never once looked self-conscious while wearing it.
Palicki's giving off a similar vibe in this picture. I imagine it's no mean feat to walk around in a red bustier and a tiara in broad daylight, surrounded by dozens of people on set.
you are right. It is a big plus for the show.
However, Helen Slater looked quite confident in her Supergirl outfit, and even Ebert, who hated the film, said that at least you don't see a gimmick, or a cheesy costume, you see Supergirl, plain and simple.
The point: the script still needs to be good.