Hip dips, also called "violin hips," are inward curves or indentations that appear on the sides of the hips, just below the hip bone. They are a natural and normal part of human anatomy, primarily determined by the shape of the pelvis and the distribution of fat and muscle around it

. These dips occur because of the structure of the pelvic bones-specifically, the ilium (the upper part of the hip bone) and the way it connects to the femur (thigh bone). The inward curve is caused by the shape of the pelvis and the prominence of the femoral neck and greater trochanter (parts of the thigh bone)

. Hip dips are more common in women due to the wider pelvic structure needed for childbirth, but men can have them too. Everyone with typical anatomy has some degree of hip dips, as they reflect the natural contours of the skeleton

. They are not related to weight, fitness, or health status, and cannot be fully eliminated through exercise or diet because they are fundamentally about bone structure. While building muscle in the glutes and outer thighs can help smooth the area, hip dips themselves will not completely go away

. In summary, hip dips are normal indentations caused by the shape of your pelvis and thigh bones, influenced by genetics, and are not a sign of any health problem or something that necessarily needs to be "fixed"