To me this doesn't look retro--this looks modern. I guess my age is showing. But the Toth style hair seems like cartoon shorthand.
It's not really a hairstyle that real women ever had--it's just a cartoonist economy of image to show woman-hair. The red boots didn't bother me at the time--but the white stripe on red seems like the classic WW boot and it goes with the American flag theme. I much prefer the eagle the way Oksner and Toth drew it over how it was drawn by 90% of the artists in the comics at the time.
What kind of wings are those? Also I like it when the belt is white and clearly separate from the eagle. I like belts to be belts for real. It always bugged me when there were too many small stars peppering her bottoms, just because in standard comics this got too busy on the page. With today's modern tech it's possible to drop stars into the design and have them offset printed without looking crowded on the page--so it's not such a big deal anymore. But I don't see the reason for using so many stars--five stars make the point just as easily as fifty and it's less work.