Random question: what sizes are mannequins?

I went shopping today and while I was out started wondering what sizes the mannequins are. I was in Victoria’s Secret looking at a bra that I thought was really cute, but they didn’t have my size, so I started wondering if the mannequin was my size. The rest of the day I couldn’t stop wondering if any of the mannequins at any of the stores wore my sizes. Anyone know what size or cup size mannequins are?
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Just to be clear, this is about all clothes, not just bra sizes. It was just a bra that got me thinking about it.
Random question: what sizes are mannequins?
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