Why do some people get frequently underestimated?

I find that I’m frequently mistaken for a bimbo. I think that in my case, it’s because I am bubbly, have big eyes and big breasts and I like to see the best in people. Also I don’t like to show off. Even I thought I was stupid. I was assessed by a psychologist and found to have a high IQ, when I was assessed for and diagnosed with Autism. It’s something I don’t share offline.

Why do some people get frequently underestimated?
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