How Big Is a 28B Bra Cup Size?

As an Amazon Associate we earn from qualifying purchases.

Finding your bra size can be a difficult task. Knowing your bust and band size is critical for finding the perfect fit. With the correct bra, you can contour and raise your breast while being comfortable and feeling relaxed. Do you think you’re a 28B? In the article below, I will go through how big is a 28B bra size.

How Big Is a 28B Bra?

How big is a 28B bra? A B cup has a bust size that is two inches larger than the band size. If your underbust measures 23 to 24 inches and your overbust measures 29 to 30 inches, your bra size is 28B. Your sister sizes are 26C and 30A.

Graphic illustration of a woman wearing a blue tank top and black cycling shorts explaining that a 28B bra size has a bust size of 29-30 inches and band size range of 27-28 inches

A bra’s size is determined by two measurements: the underbust size and the overbust size. The underbust size indicates how high and where the band will lie, while the overbust size means how straight or big your cups are.

28B Bra Details

28B Bra SizeDetails
Underbust23-24 inches
Overbust29 to 30 inches
Size Down26C
Size Up30A

What Do 28B Breasts Look Like?

Since breasts in a 28B bra size fit properly less than those in bigger bra sizes, they seem smaller on the chest. Meanwhile, if you have a flat abdomen, your boobs may appear perkier. Breast shape can be affected by factors such as body shape, genetics, exercise, and age. Even a bra may change how your breasts seem in any item of clothing.

What Bra Styles Should You Wear With a 28B Bra?

Because of this cup size’s adaptability, you may use various bras. Some of the styles available to you are as follows:

A woman wearing a white knitted bralette crop top and brown shorts standing near a rocky formation

For petite women with small breasts, like a 28B, take a look at my #1 recommended push up bra: the Maidenform Demi Push Up Bra. Super comfortable, this specific bra features Wonderbra technology to give you a natural looking lift!

What Is the Importance of a Properly Fitted Bra

A poorly fitting bra may be pretty unpleasant. Properly fitting your bra can achieve all-day comfort and support while emphasizing your natural silhouette. Here are the benefits of wearing a properly fitted bra:

  • It enhances your posture – your posture improves when you wear the correct bra. Because of your chest’s support, your shoulders are no longer slouched, and your back is upright. It also doesn’t tighten or add extra layers where they aren’t needed.
  • It boosts your self-esteem – you will no longer be distracted by your bra if it fits you perfectly. A bra that fits and looks nice on me might make me feel confident, seductive, or just comfortable.
  • It makes your breasts look perkier – wearing a properly fitting bra is critical since it plays a vital part in making your breasts look beautiful.
  • It alleviates back pain – if you’ve been experiencing back discomfort, it might be due to wearing an inappropriate bra size. If you can correct it, you will be greatly relieved.
  •  It benefits your health – backache, skin irritation, and chest pain can all be reduced by wearing a properly fitting bra that supports your breasts.
A woman wearing a brown bra brushing her teeth with a yellow toothbrush and a white towel on her head in the bathroom

Related Questions

What Is the Weight of a B Cup?

Boobs that fit into a B cup bra are not particularly large. As a result, they do not weigh too much. A B cup breast will probably weigh 0.86 pounds. To put it into context, the weight is equivalent to five cockatiels, which are tiny parrots.

Is Cup Size a Smaller Than a B Cup Size?

If you wear an A cup, the difference between your bust and band sizes is 1 inch. An A cup is smaller than a B cup because there is a 2-inch difference between them.

Is the C Cup a Bigger Cup Than the B Cup?

Based on your torso and breast sizes, C and B cups seem different to various people. A B cup has a bust 2 inches larger than your band measurements, while a C cup has a bust 3 inches larger.

Bra Size Measurement & Cup Size | A, B, C, D, DD Bra Sizes AND Extra Large Breasts


Your boob size might affect how well a bra fits, and your bust appears. Some breast shapes require specific bras, and wearing the wrong one can be uncomfortable and ill-fitting. Also, acquire your bra measurements before shopping, and always try on the bra before you purchase it.


Allena is the Founder and Editor of The Better Fit, a platform dedicated to empowering women with practical advice on bras and fitness, inspired by her own revelation of the widespread issue of incorrect bra sizing. Her expertise and tips have been recognized by major publications such as Cosmopolitan, Better Homes & Gardens, Insider, and NBC, making her a trusted voice in women's wellness and lifestyle.