Does anyone elses boobs look smaller than their bra size suggests?

When my friends ask me what size I am and I tell them, they're like 'no you're not, you look smaller than that' or 'you don't look that big' and it makes me feel a little down. One of my friends even said I look 2 or 3 cup sizes smaller than I actually am. My size sounds like it would be big but it's not huge, although it may look big on some people depending on their body shape. I think because I have a pear shaped body my wider hips make them look smaller. Do any of you girls have this?
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