Ever notice one boob looks or feels a little different than the other? Maybe one cup of your bra fits looser, or your nipples don’t line up exactly. If you’ve ever caught yourself wondering, “Is this normal?” — deep breath. It is so normal. Like, borderline boring how normal it is. Breast asymmetry is incredibly common, and in most cases, it’s totally harmless.

Breasts are Sisters, Not Twins

Let’s start with the big one: nobody has perfectly symmetrical breasts.

According to Dr. Kirtly Parker Jones, an OB/GYN at the University of Utah, 90% of women have at least a 15–20% difference in breast size — and that’s considered completely normal. Most of us have one breast that’s a bit larger, fuller, or higher than the other. It might be obvious, or so subtle only you notice. Either way, it’s all in the realm of normal.

In fact, a study published in the Annals of Plastic Surgery used 3D imaging to analyze women’s chests and found the left breast was commonly larger than the right. Why? No one really knows — it’s just how we’re built.

Another study cited by plastic surgeons found that 91% of women had some degree of asymmetry — whether in volume, nipple height, or shape. So if your body feels slightly lopsided, you’re basically part of the global norm.

Embracing the Mismatch

It’s easy to get caught up in comparison — especially when we’ve been fed images of symmetrical, perky, Photoshopped perfection. But real bodies aren’t airbrushed. They’re lived in. They’re dynamic. And they’re never perfectly balanced.

Your breasts are yours. That alone makes them worth celebrating.

At DOUBL, we see asymmetry all the time — and we think it’s beautiful. Our bras are custom-fit to your body (yes, both sides of it), because we know standard sizes were never designed for real, diverse, beautifully unique women. We’re not here to “correct” your body. We’re here to support it — exactly as it is.

So here’s to the slightly-bigger lefts. The perkier rights. The full, the soft, the uneven, the lived-in. You’re not weird. You’re wonderfully you. 

And you deserve a bra that finally gets that.