Straight
The bust and hips are basically the same size. The waist is slightly smaller than the bust and hips but isn't well-defined.
Pear
The hips are larger than the bust and the waist gradually slopes out to the hips. If they have a more defined waist, they are a spoon.
Hourglass
The bust and hips are basically the same size and your waist is well defined.
Inverted triangle
The bust is large, the hips are narrow and the waist is not very well defined.
