they say first impression is the last impression, however, my experience tells me that you cannot judge anybody in first meeting or at first sight.
Some people trust the first impression of a person’s character because they believe that their judgments are correct. They are of the opinion that a book is known by the cover it has and the people are known by the dresses they carry. There are two types of people about whom we made judgments. One is whom we never interacted with but by looking their physical appearances of that person, we instantly made up his impression. Like if a girl is wearing “hijaab” then she seems to be a person of high moral characters to society but if a girl is wearing a jeans and a t shirt then she is known as “burger”. Second is whom we interacted with but this interaction is for a while. The first impression of a person might be positive or negative depending upon how you surmise his/her nature. However, I have witnessed that this perception of people is imprecise.
In my standpoint, first impression might be misleading. In the same way, people can be mistaken n a person’s character while trying to identify them. For example, Let’s suppose a scenario. You are sitting in a car waiting for traffic light to turn green and all of a sudden a person having an awkward dressing, rushes in hurry and passes your car, screaming “Oh my God, I’ll die soon”. Your first impression about that person would probably be that either he is weird, crazy or drunk. Without acknowledging about person’s circumstances, you immediately made up your mind regarding his personality and character only by observing his physical appearance, but this can be possible that that person is in trouble and he needs somebody for help. If you have approached that person and asked him about what has happened then you might be able to see his true colors which cannot be estimated