Most Helpful Guy
Not necessarily. I usually get the feeling of a stuck up girl mostly from her attitude. Like she wouldn't hold eye contact . Huff and puff all the time.. is sharp and short .. doesn't smile .. makes fun of others and belittles them. Or wearing from head to toe designer stuff with tons of makeup. ( as well as the attitude above)
But if a sweet girl is approachable and kind and she jokes and says in between that she knows she is hot . That would be more of self confidence.
basically in short, the more that you are communicating for men that you are in a status above them ( weather by attitude, clothes, words) the less you would get men approaching you . Simply you would be intimidating of high maintenance / superficial.
There is nothing wrong in feeling you are hot. Nothing wrong in even communicating this in a subtle way or in between jokes. I could imagine it would be awkward if you say it in a straight face with a more serious tone though.
Just imagine a guy saying to you '' I know I am handsome and rich '' what do you think?