Sailor suits might work when it comes to fighting evil by moonlight, but in an RPG? Maybe not so much.
Check out these cool GIFs by Sasha Mutch, which reimagine a few sailor scouts as fantasy RPG characters:
Sailor Moon, the armoured cleric
Sailor Mercury, the mage
Sailor Mars, the ranger
You can check out more of Sasha Mutch's work here -- including explanations for the classes picked in these GIFs.