There are various uniforms, from schoolgirl, casual, and sailor fuku that are all changed in the timeline.

School Standard :: The School Uniform
Everyday Session :: The Normal Clothing
Henshin :: The Sailor Fuku
Prettied Up: The Royal Dressing

Disclaimers
      Bishoujo Senshi Sailor Moon and Codename: Sailor V is © copyrighted 1992 Takeuchi Naoko. Current English editions © copyrighted Takeuchi Naoko, translated by Kodansha Comics. Something Beautiful © copyrighted 2009 to present Wildnature, by a fan for the fans.