'Double Fairy Tale!' Identical Twin Sisters Marry Identical Twin Brothers in Joint Ceremony

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How Does This Happen?

There are a few theories as to how these such occurrences happen. For example, some amount of attraction is in your DNA, making it easy to see on some level how twins ending up with twins could happen. Licensed clinical psychologist, Ramani Durvasula, told Yahoo Lifestyle that, "given that two twins who are genetically identical and grew up in the same home had almost identical nature and nurture, they may make similar choices in a partner."

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