Shop Now New Bras Undies Lingerie Fit Blog Loyalty Program

your bra size change when you lose weight

One of the most common questions we’re asked is: “Will my bra size change if I lose weight?”

There are several things that can change your bra size – one of them being fluctuations in your weight. If you lose weight, it’s possible you’ll experience a bra size change. But this isn’t always the case. It’s possible your bra size will remain the same after losing weight. Let’s consider the factors that may cause a change in bra sizes.

Factors that can cause your bra size to change with weight loss

Every woman is different. For some women, losing six pounds will put them in a different bra size. For others, weighing six pounds less won’t change a thing about their current bra size.

Here are the factors that can affect a change in bra sizes with weight loss:

1.  How much weight you lose.

Your boobs contain fat cells. Shedding pounds can decrease the fat cells in your boobs. This causes your bustline to decrease. However, you typically lose fat all over your body when you lose weight. It’s hard to tell when your boobs will be affected. Of course, it also depends on how much fat you lose.

2.  Your genes.

No two women’s breasts are the same, thanks to genetics. Your genes determine your boobs’ shape and size. Your genes affect hormone levels, which affect the density of your breast tissue. Women with less fatty breast tissue may experience less change in their bra size from losing weight. On the other hand, women with more fat tissue in their breasts may notice more changes. Whether or not your breasts shrink after losing weight depends not only on how much fat you lose, but how much fatty tissue your breasts originally contained.

3.  Your age.

Many changes take place in the breast as a woman ages. The ligaments in older breasts can become weak, making the breasts sag. And women that are past menopause may have more fat in in their breast tissue. This means that older women may quickly a notice a bra size change from losing weight.

Related: 6 Signs It’s Time To Buy New Bras


A change in bra sizes from weight loss won’t always mean a decrease in cup size. You could lose weight, but actually gain a cup size. It all comes down to how your body loses fat, and how the weight loss affects the shape of your breasts. But don’t let a potential change in bra sizes deter you from losing weight. Weight loss comes with excess benefits. And though buying new bras can be expensive, you can stay within budget. Plus, it’s always fun giving your lingerie drawer an upgrade – even if it’s a gradual, economical upgrade.

If you’re planning on losing weight, go ahead and budget for needing to buy new bras. But, don’t buy bras in anticipation of your bra size changing. It may not change at all after shedding few pounds. Either way, it’s best to get a professional bra fitting after losing weight to determine if you need a different bra size.

We Highly Recommend

Whether you’re shopping for new everyday bras or lingerie for a special occasion, it’s always a good idea to seek out a second opinion. We know how hard it is to find bras that fit well and feel good, especially when you’re doing it on your own. If you’ve ever felt unsure about your bra size or you just don’t know where to go to find good bras, it’s time to let a bra fitter help.

Many specialty lingerie boutiques offer bra fittings. Their expert bra fitters will take the pain and frustration out of bra shopping and do all the work for you. Even better, their product knowledge can save you time and money. Plus, they know where all of the best bras are hiding.

If you’ve struggled with finding bras in the right size, it’s time to make a change. Visit our specialty store locator to find a store near you and schedule an appointment.

Happy bra shopping!

Featured image lingerie:
Parfait Aline T-Shirt Bra P5251 in Nude
Shop Now

Published by

Lauren Hamilton

Lauren Hamilton is the founder of, a lifestyle and relationship blog offering relationship advice and encouraging women to be the happiest, most confident version of themselves through positivity and self-love. She's also a freelance writer and communications strategist. Follow her on Instagram or Twitter, and check out some of her accomplishments on her portfolio.

Go Top