Is it possible for feet to be two different sizes?

sadie-lynn
i am usually barefoot, just socks, or open-toed shoes. I haven't bought sneakers in a while, and don't wear them often. but when I do, my left foot always feels trapped. I know it's normal for one side to be bigger than the other, but this much bigger? today I put my sneakers on and my left foot actually hurts, like it's being strangled. my toes are curled up to fit in there. I'm limping. could my left foot be a half-size bigger than my right foot?
Is it possible for feet to be two different sizes?
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