To me, I would think of a light plumper as being a big heavier or "thicker" then just thick. But both would still have a small waist. A light plumper would have plusher arms and legs, face, and a light pudge on her tummy - small love handles. A thick woman would just have big hips, butt, toned but big legs, but still have an athletic tummy arms, and trim face. Dors is a great example of a light plumper to me. She's got a huge chest, big round hips and butt, and still a small waist. Light face and arms and heavy legs. Yum.