The average woman says she now wears a 34DD-sized bra, according to data from lingerie retailer Intimacy. That's up from a 34B 20 years ago! (To put that into perspective, that's the same band measurement, but about three inches bigger around the fullest part of the chest.)
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...But You're Still Probably Wearing the Wrong Size
Seventy percent are down on their girls, according to research published in the International Journal of Sexual Health. Of course, most men had no complaints. Play up your décolletage so you feel amazing about it.
In fact, almost one in three marathon runners experiences breast pain, according to a recent study out of the United Kingdom. Here's how to minimize your discomfort.
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After All, Breasts Can Move A Lot
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So get this: When you run, the twins do, too—in a sort of figure-eight shape. And they can travel up to eight inches, according to research out of the U.K. All the more reason to wear a supportive sports bra!
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They Can Also Be Crazy-Large
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The current Guinness World Record for "largest natural breasts" was awarded in 1999 to a woman whose chest measured 70 inches around its fullest part. That's 5.83 feet!
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The Twins Aren’t Always Identical
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In fact, one breast is usually about a fifth of a cup size larger than the other, on average, according to the book Breasts: A Natural and Unnatural History by Florence Williams.
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Breast Augmentation Is (Still) in High Demand
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It was the top cosmetic surgical procedure in 2012, according to the American Society of Plastic Surgeons. About 286,000 patients had their breasts done last year—although that's down seven percent from 2011.
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The Bra As You Know It Is Pretty New
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Mary Phelps Jacob received a patent for the "backless brassiere" in 1914, but Ida Rosenthal and her husband William, founders of Maidenform, created the bra with its current sizing standards in the 1920s. Read more about the history of the bra.
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Nipplegasms Are a Real Thing
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As in, orgasms triggered by your nipples. Seriously.
Alison Goldman is a writer and editor based in Chicago. She previously served as the lifestyle editor at Boston Globe Media's Boston.com and has also worked at WomensHealthMag.com and Glamour. Read more of her work at alisonmgoldman.com or follow her @alisongoldman on Twitter and @alisonmgoldman on Insta.