What do you see in person at first glance?  

I first look at the persons face, and then observe his/her acts, facial expression, how they converse, see if they are friendly.... then after that, i evaluate my first impression of that person.... but i will not stick to that first impression of mine... before i fully judge a person, i first befriend with it and evaluate him/her according to what he/she do....

I always notice the expression on the person's face at first glance.I feel that the expression reveals that a person is confident, smart or good or not whereas the accessories come later.

hi magicalangel........according to me everyone gets attracted towards a beautiful face and then the other features comes in consideration and so do i.........and dressing sense of persons also plays a important to guess his or her personality........but just dont go with beauty......

Hello there, first time i will look to this person eyes, eyes can say so many, even he want lie, eyes will be soul mirror.
Expression too, face expression, i want to see if is arrogant, i hate arrogant peoples.
Of course i will look how is dress, if is clean, and i will look to his hands..i like hands a lot, maybe is my couriosity; hands.

I notice their face first and then their clothing and body language.

The smartness.It is written all over the faces of most of the people.The smartness as far as I am concerned includes all the other positive aspects I look for in a person like the polished behavior, style and neatness.I just can find these in a person at the first glance which will decide my future relationship with him or her.