10 Facts About Boobs You Never Knew, You Boob

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6a00d83451b46869e20105359fbd1b970c-640wi 1. Boobs Are Getting Bigger Surveys have shown that women's bra sizes are getting bigger and bigger. Twenty years ago, the average size was a 34B, but now it is a 34DD. Some research suggests that this increase in size is caused by pollutants in the environment that alter hormonal balances by mimicking estrogen.