selfie - n. a picture that you take of yourself especially by using the camera on your smartphone
post - v. to add a message or phone to an online site
editing software - n. computer equipment to help you change a person’s appearance in photos
vanity - n. the quality of people who have too much pride in their own appearance, abilities, achievements
peer pressure - n. a feeling that you must do the same things as other people of your age and social group in order to be liked or respected by them
trait - n. a quality that makes one person or thing different from another
authority - n. the power to give orders or make decisions