Similar word to pinafore:

Sunday best, accouterment, apparel, attire, attirement, civvies, costume, covering, drape, dry goods, duds, ensemble, evening clothes, frock, garb, gear, gown, guise, habiliment, habit, muumuu, outfit, pinafore, raiment, robe, shift, skirt, smock, suit, things, threads, tog, toga, toggery, trappings, uniform, vestment, wardrobe