9 Women Try on 34B Bras and Prove That Bra Sizes Are B.S.

34B is one of the most popular bra sizes in the country. "That size is always the first to sell out," the Aerie saleswoman said as she checked for the size among the dozen or so lightly lined options in the store—the only ones left were in beige and black. "I swear, half the people who come in here say they are a 34B," said a saleswoman at Victoria's Secret, "and they buy that size whether it fits or not." 

For the record, you know that a bra fits when the band sits securely all around your rib cage on the loosest setting (the extra hooks are there to tighten the bra as it stretches out) and the inside of the cups should have full contact with the surface of your breast without bulging or spillage out the sides. 

With that in mind, Cosmopolitan.com asked nine self-described 34B's to try on bras from three of the world's biggest bra manufacturers—Victoria's Secret, Aerie, and GAP—to see how they stacked up against their own 34B bras. Some of the women had been professionally sized previously. Some had not. Some were wearing bras that were only a few months old, while others had been wearing the same bra for years, despite the fact that most bras lose their elasticity after six months to a year of regular wear. No one fit every bra. Some people didn't really fit any of the bras. Bra sizing is so weird. 

Barbara's ranking from best fit to worst fit: Victoria's Secret, her own Calvin Klein bra, Aerie, GAP

Piper's ranking from best fit to worst fit: Victoria's Secret, her own Hanky Panky bra, Aerie, GAP

Marissa's ranking from best fit to worst fit: Aerie, GAP, her own Princesse Tam Tam bra, Victoria's Secret

Alicia's ranking from best fit to worst fit: Her own VS Pink bra, Victoria's Secret, Aerie, GAP

Misty's ranking from best fit to worst fit: Her own Timpa bra, Victoria's Secret, GAP, Aerie

Audrey's ranking from best fit to worst fit: Her own Aerie bra, Aerie, GAP, Victoria's Secret

Sam's ranking from best fit to worst fit: Aerie, GAP, Victoria's Secret, her own GAP bra 

Layla's ranking from best fit to worst fit: Victoria's Secret, GAP, Aerie, her own Victoria's Secret bra

Coco's ranking from best fit to worst fit: Aerie, her own Victoria's Secret bra, GAP, Victoria's Secret

In the end, many of the women found that the bands on the bras were looser than they would like, but admitted that they often fit their bras to the tightest set of hooks, rather than the loosest, which would seem to indicate that they should actually go down a band size.  

There also seemed to be a general consensus that the cups on the Victoria's Secret bra was smaller that the cups on the Aerie and GAP bras, and that the cut of the Victoria's Secret bra was more likely to cause spillage out the sides than the higher-cut Aerie and Gap bras. That's not to say that the Victoria's Secret bra is designed badly—it really just depends on the shape of your breasts and where they are positioned on your body. If your breasts come more from the side, as many women's do, higher cuts are often more accommodating than something that cuts straight across. 

Although some of the women found that the Aerie and GAP bras were too large in the cup, in most of those cases, the difference was not drastic enough to justify them going down a whole cup size. When you are in between bra sizes like that, it's actually better to choose the larger of the two cup sizes and then use pads to fill out the extra space, rather than cramming your breast into a cup that is too small.

So, long story short, bra sizing is a mess—it's completely different from one brand and one cut to the next, so even if you are a 34B in one bra, you definitely won't be in all of them. Damn it! Why can't anything be simple?

*Names have been changed.

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