Fashion is woman's nature, so your concern is unnecessary. In my personal opinion, the most obvious factor that women are crazy about sunglasses is owing to thhat wearing sunglasses can make their face look smaller. And almost every woman is willing to have a small face. In addition, sunglasses are becoming good stylish accessory recently and make them look fashion. There is still a practial value, women wear sunglasses to against strong rays in order to protect their skin and eyes. Therefore, it's totally fine for you to wear a sunglasses, which makes you look fashionable and protect you from harmful UV rays and strong light from all angles. However, just pay attention to one point, do not wear it in the room, which let you seem to be unfriendly and haughty. Hope these suggestions can help.