I’m completely invisible to guys (like directly infront of them and not seen invisible) What can I do?

No matter what I do guys don’t notice me I’ve paraded around school with ballgown on before (true story) and I didn’t get noticed or a second glance and 24/7 I get told people didn’t even know I was near them. I don’t know why I’m so unnoticeable because genuinely I know I’m pretty and I have good personality. If I talk to guy I’ll either get passed off or overshadowed. I’ve just never ever been seen in my life, what can I do?
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The ballgown was for Halloween. No one else gave any efforts and I lost to a girl in a everyday outfit (jeans tee shirt) who had a sign on that said princess peach. I wore a 50s pink gown I’d thrifted, a blond wig, and a crown. I felt like complete shit.
I’m completely invisible to guys (like directly infront of them and not seen invisible) What can I do?
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