softball thickie
n. A female who would not be considered "fat" but has a slight chunkyness to them around the mid-section and love handles. In a steriotypical situation, if they were to play a sport it would be softball. These girls are not typically unattractive and would be considered "hot" if they lost about 10 to 20 pounds.
In Clueless (1995) Brittany Murphy was a softball thickie, however after losing those few pounds she is now a complete and total hottie.