Sick of bra straps cutting into your shoulders or underwires digging into you? You’re not alone! It’s estimated that a huge number of women are wearing the incorrect bra size. A correctly fitted bra is not only important for comfort and appearance but also for good support and posture. This guide will take you through the process of discovering your perfect bra size and style.
Measuring Up: Step by Step
Good measurements are the key to a good bra fit. Take a flexible measuring tape and wear a well-fitting, non-padded bra.
Band Size: Measure around your ribcage, level with your bust. The tape needs to be tight but not painful, and against the floor.

Bust Size: Take around the fullest area of your bust, with the tape not too tight or too loose. Keep the tape straight.

Decoding the Numbers: Bra Size Charts and Sister Sizes
With your bust and band measurements, use a bra size chart (easily accessible on the internet) to determine your matching bra size. Be aware that bra sizes have a number (band size) and a letter (cup size).
Occasionally, even with precise measurements, a bra may not fit exactly. That’s where “sister sizes” are helpful. Sister sizes share the same cup volume but have varying band and cup sizes. A 34B, for instance, has the same cup volume as a 32C or a 36A. Knowing sister sizes can really open up your possibilities when searching for the ideal fit. A sister size chart can be a useful resource.
The Perfect Fit Checklist: Important Things to Consider

A properly fitting bra should be comfortable and supportive. Here’s what to check for:
Underband: Close-fitting and flat against the ground. You should be able to comfortably fit two fingers under it.
Sideband: Gives support and helps prevent spillage. Wider sidebands are usually best, particularly for bigger busts.
Center Gore: Flats against the chest. A higher gore tends to give better support.
Cups: Must completely cover your breasts without gaping or spillage. The wires (if any) should not dig in.
Underwire: Gives lift and support. Make sure it rests comfortably against your ribcage.
Straps: Should remain in position without digging into your shoulders.
Hook and Eye: Enables adjustability. Most bras have more than one hook to allow for changes in band size over time.
Beyond the Numbers: Choosing the Right Bra
Though size is important, there are other elements that affect bra comfort and fit:
Body Type: Various body types might call for various bra types.
Fabric: Take into account the time of year and your own taste when selecting fabric.
Occasion: Various bras are suited for various occasions.
Brand: Well-known brands tend to provide quality and fit.
Cup Check: Ensure that your breasts are completely inside the cups.
Strap Adjustment: Adjust the straps to a supportive and comfortable position.
Bra Accessories: Increasing Comfort and Convenience
Bra accessories can make all the difference:
Nipple Covers: Create coverage and reduce show-through.
Bra Extenders: Add band size for a better fit.
Low Back Converters: Enable you to wear bras with low-back tops.
Transparent Straps: Provide subtle support.
Racerback Clips: Convert regular bra straps into a racerback style.
Frequently Asked Questions
How should my bra fit?
Snug but comfortable on the loosest hook, allowing for adjustments as the bra stretches.
How long is a bra usable?
Replace bras every 6-12 months, depending on wear and tear, say experts.
Why does band and cup size exist?
Band size is your underbust measurement, and cup size is calculated from the difference between your bust and band measurements.
Which hook should I use?
Begin on the loosest hook and progress to tighter hooks as the bra stretches.