Poll: Why DO Girls Ignore Me?

I am a junior and college and this is becoming a huge problem. I thought I was decent looking since I have modeled for Jcrew and Ruehl and some other minor clothing lines. I guess not because Girls wont even sit next to me in cl, when we are in groups for work they will basically ignore me the entire time and when I talk just ignore that. Then if I with a friend who has girls in his group when we hang out at night they dont even introduce themselves or look at me, and then they just stare at me when I talk and dont even reply. Even today there was this Fraternity basketball tournament i was in and there was a girl on my team who basically ignored me. She would give hugs to this lanky asian kid and other white kid but basically just skip over me. She even invited everyone on our team to her party but didnt even ask me. I dont even know what I am doing wrong. I am really tan and am from Brazil and India. I dont even know what I am doing wrong.I usually have stubble/5 oclock shadow and I have a really angular face. I look pretty different from most guys since I am Brazilian and Indian. Bah I dont know what it is.