This is how Snow White costumes have changed over the years.

Image Year Description
1979 - 1980 Mary Jo Salerno played Snow White in the musical stage production.
1983 - 2014 Snow White looks just about accurate to her animated counterpart though with red stripes instead of drop shapes on her pumpy sleeves.
2013 - present Snow White's hair becomes shorter and curlier, her pumpy sleeves are now royal blue with red drop shapes. Plus, her skirt is reduced in size allowing her to run and skip freely.