Bra sizing going from A, B, C, D to DD, DDD. Why not just to E?

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Old time listeners of Loveline might remember this being a talking point.

American bra sizes offer a very strange range of measurements – AA goes to A, then normal alphabet progression B, C, D.

But then again to DD, DDD. Then back to E, F, etc.

I understand European sizing is more straight forward A->F+ without the double letter stuff.

What is the reason or origin behind the idea of “double D”, “triple D” etc. vs. just going to the logical next letter of the alphabet? Was it a marketing ploy?

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13 Answers

Anonymous 0 Comments

Bra sizes are based on the difference between 2 measurements of a woman’s chest. The first is done above the breasts, to get the size of the woman’s chest, just like a men’s suit jacket, and the other is across the widest part of the chest including the breasts. The difference in those measurements are the bra size.

In the specific case of D and DD (DDD doesn’t really exist) a D cup bra will have a difference of 5” and a DD will have a difference of 6”.

With a bra that is 34D it means the woman’s chest is 34 inches(the above the breast measurement) and the D would be a measurement of 39”. A 34DD would have measurements of 34” and 40”.

You can have a 30D and a 30DD just like a 50D and a 50DD. These women will be very different in size but the differences between the measurements would be 5 or 6 inches.

Now why do they have a D and a DD? Just because that’s how they have always done it. Womens bra sizes go from AAA, which would be a difference of less than an inch and a L which is a difference of 12 inches. So you could have a 34L and a 50AAA. Again the difference in overall size of the women would be very obvious but the difference in the measurements would be fixed.

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