Estrogen helps make women curvier than men by making their pelvis and hips wider, and their breast grow. Estrogen is part of your menstrual cycle, helps you get pregnant, and plays a role in helping you develop bones and grow hair.
Most people don’t grow any taller after the age of 20, but a recent study published in the Journal of Orthopaedic Research found evidence that the pelvis (the hip bones ) continues to widen in both men and women up to about age 80, long after skeletal growth is supposed to have stopped.
As your pelvis (the large bone across your hips) begins to grow, your hips get wider, your breasts develop and your waist gets smaller. In other words, your body gets some “shape.” Some girls gain weight quickly during this time. Exercise and eat well, but don’t get worried.
Your hips really do get wider as you get older, according to a new study. Even though most people stop growing in height by the time they hit age 20, researchers have found evidence that the hip bones can keep growing even as people enter their 70s.