Having a larger or wider pelvis does not guarantee easier labor. Other factors include the baby's size and position, the mother's health and fitness, and the feeling of safety during labor. Whether you have wide or narrow hips, pregnancy hormones naturally increase pelvic space during pregnancy and labor.Having a larger or wider pelvis does not guarantee easier labor. Other factors include the baby's size and position, the mother's health and fitness, and the feeling of safety during labor. Whether you have wide or narrow hips, pregnancy hormones naturally increase pelvic space during pregnancy and labor.