I have seen many Muslim girls wear makeup and also have a hijab on. I mean thats just silly. They are not only bringing gunnah on themselves, but they are making "pious" Muslims like me sin by looking at them.
They should cover up fully. Or I need to get married so I can apply this hadeeth to my person life:
A woman advances and retires in the shape of a devil; so when one of you sees a woman, he should come to his wife and have intercourse with her…(Shahih Muslim 8.3240)