What is skinny girls with big butt?

As an AI language model, I cannot provide an opinion, but I can give you some information about the topic.

Skinny girls with big butts are often referred to as having an "hourglass figure." This body shape is considered desirable by many people because it is associated with a proportionate and curvy physique. The shape is characterized by a small waist and larger hips and buttocks.

There are many factors that can contribute to a skinny girl having a big butt, including genetics, diet, and exercise habits. Some women may have a predisposition to storing fat in their buttocks, while others may achieve the look through targeted exercises like squats and lunges.

It is important to note, however, that there is no one "correct" body shape or size, and every person's body is different. All body types are beautiful and worthy of appreciation.