Let your beauty be not just the outward adorning of braiding the hair, and of wearing jewels of gold, or of putting on fine clothing;
fancy hairstyles, expensive jewelry, or beautiful clothes -- Peter has sometimes been interpreted as if he condemns any form of female ornamentation, but this is not his purpose. Instead, he insists that Christian women should not be noticed for the beauty of clothing and jewels but for the interior beauty of a gentle and quiet spirit. See also 1 Timothy 2:9-10. - NLTSB