What cup size is a bra size 38? ——Detailed explanation of bra size and hot topics
Recently, the discussion about women's underwear sizes has become a hot topic again, especially the question of "what cup size is a 38 bra?" has attracted widespread attention. This article will combine the hot content of the entire network in the past 10 days, give you detailed answers in the form of structured data, and attach an analysis of relevant hot topics.
1. Cup analysis of bra size 38

Bra size consists of numbers and letters, the numbers represent underbust size and the letters represent cup size. Size 38 corresponds to the lower bust size, and the cup size needs to be determined based on the difference between the upper bust and lower bust. The following is the difference table corresponding to the cup size:
| Difference (cm) | Cup |
|---|---|
| 7.5-10 | A cup |
| 10-12.5 | B cup |
| 12.5-15 | C cup |
| 15-17.5 | D cup |
| 17.5-20 | E cup |
Therefore,A size 38 bra can be an A, B, C, D or E cup, depending on upper bust size. For example, if the lower bust is 38 inches (approximately 86 cm) and the upper bust is 96 cm, and the difference is 10 cm, the cup size is B and the size is 38B.
2. The relationship between recent hot topics and bra size
In the past 10 days, the following hot topics have been related to women’s underwear sizes:
| hot topics | Related content |
|---|---|
| "Body anxiety" discussion heats up | Many women have shared their own anxiety over sizing confusion and are calling on brands to provide more transparent sizing guides. |
| "No size underwear" goes viral | Some brands have launched size-free underwear, but consumers have reported that their applicability is limited and individual differences still need to be paid attention to. |
| Search volume for “size 38 bra” surges | Data shows that “what cup size is size 38?” has become a frequently asked question on search engines, reflecting widespread confusion about sizes. |
3. How to correctly measure bra size
To avoid sizing errors, here are the steps for measuring:
1.Measure the bust: Place a soft tape close to the bottom of the breast, circle it horizontally around the body, and take the average value during exhalation and inhalation.
2.Measure upper bust: Lean the body forward at 45 degrees, place the soft ruler around the nipple for a week, and take the average of the three postures: upright, 45 degrees, and 90 degrees.
3.Calculate difference: Subtract the lower bust from the upper bust, and determine the letter according to the cup chart.
4. Common misunderstandings and answers
| Misunderstanding | Answer |
|---|---|
| "The bigger the cup, the looser the bra." | The cup size only indicates the breast volume and has nothing to do with the tightness. The underbust number determines the tightness. |
| "Size 38 must be D cup" | Cup sizes vary from person to person and should be selected based on actual measurements. |
| "All brands fit one size" | There are differences between different brands. It is recommended to try it on or refer to the size chart of the specific brand. |
5. Summary
The cup size of bra size 38 is not fixed and needs to be determined based on personal measurement data. Recent discussions about underwear sizing reflect the importance women place on comfort and health. Consumers are advised to measure body shape changes regularly and choose a suitable brand and style. At the same time, the industry also needs to further optimize size standardization to reduce consumer confusion in choice.
Through the structured data and hot spot analysis of this article, I hope it can help you clearly understand the secrets of bra size and choose the underwear that suits you more confidently.
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