Custom order for Jan-JubaSize: Since it's mermaid style, so only error is less than 1'' between your real measurements (bust, waist, hip: biggest part of hip, hollow to floor with shoes on) and standard size, then choose standard size otherwise it's better Custom size. Please note if your real measurements are smaller than dress, then pleats and ruches will become loose; if your real measurements are bigger than dress, then pleats and ruches will be spread to plain, so dress