Guys, Why don't guys look at me at all when I'm walking in the street?

I'll be dressed up, makeup done and wearing nice clothes but covered. For example a tight top and leggings or jeans. I have big boobs and bum. I don't think I'm ugly and I've gotten compliments. Guys don't look at me at all when I'm in the street, they don't even look at me once it's like I'm invisible. I'm 5'10 tall and when I wear most shoes I'm 6ft. I understand not looking at me twice but they don't even look my way at all like I'm not even there. Why?
Guys, Why don't guys look at me at all when I'm walking in the street?
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