I am a student still learning to draw better so the anatomy might not be entirely correct, use at your own risk! Also, it is best to not trace directly from my work, look at it then draw on your own, that way you'll see your mistake and learn from it!*TIPS*
1. In order to draw better, you really have to understand the form first. This part protrudes because of the rib cage inside.
2. In front views, the length of the waist should be just a little wider than the head, but you can always go thinner depending on your style.
3. In side views, the waist is thinner than the head.
4. Skin folds when bent.
5. The length of the upper arm should be the distance from the shoulder to the waist.
6. By introducing a twist in the body, the pose can appear more natural and dynamic.
7. This is the widest part of the lower body.
8. Without supports like bras, the breast should be in a water drop shape that hangs down naturally due to gravity, not round balls.
Similar reference sheet by me: