Becca Butcher, 23, from Barnsley, South Yorkshire, has Poland Syndrome, which means one breast is significantly smaller than the other - her right one is a D cup while the left is an A cup.
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Woman, 23, has a rare condition which means she only grew one
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My boobs are totally different sizes - people think I'm mad for refusing free boob job but I love them
Young woman born with medical condition develops just one breast
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My boobs won't stop growing — I have a rare condition
My boobs won't stop growing — I have a rare condition
Poland Syndrome: What it's like to be a woman born with one boob