What is the cup size of 91? ——Detailed explanation of the relationship between bust and cup and inventory of hot topics
Recently, the discussion about women's underwear size has become a hot topic again, especially the question "what cup size is a 91"? This article will combine the hot content on the Internet in the past 10 days to provide you with a detailed analysis of the relationship between bust and cup size, and provide practical guidance.
1. Basic knowledge of bust and cup size

Cup size is given byunderbustandupper bustdetermined by the difference. The following is an internationally accepted cup cup comparison table:
| Difference (cm) | cup size |
|---|---|
| 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 |
2. How to calculate the cup size for a 91cm bust?
If "91cm" meansupper bust, you need to measure the bust first (such as 75cm), then the difference is 16cm, corresponding to D cup, the complete size is75D. If "91cm" isunderbust(Rare), need to match the bust measurement to calculate the difference.
3. Related hot topics in the past 10 days
| topic | heat index | Source platform |
|---|---|---|
| Popular science on women’s underwear sizes | 85,200 | Weibo, Xiaohongshu |
| Tips for dressing big breasts to look slimmer | 62,400 | Douyin, Bilibili |
| Sports Bra Buying Guide | 48,700 | Zhihu, Douban |
| International size conversion controversy | 36,500 |
4. Common Misunderstandings and Expert Suggestions
1.Misunderstanding:Determine the cup size only by the upper bust.
Correction:It must be combined with the lower bust measurement, otherwise the error will be huge.
2.Misunderstanding:The bigger the cup letter, the more beautiful the breast shape.
Correction:The cup size has nothing to do with the beauty of the breast shape. Suitable underwear can highlight the curves.
3.Professional advice:Measure your bust at least once a year, and more frequently for those who are breastfeeding or working out.
5. Comparative data on cup sizes of popular brands
| brand | Recommended size for upper bust 91cm (when lower bust is 75cm) | Features |
|---|---|---|
| victoria secret | 75D (US size 34D) | Gathering type |
| Uniqlo | 75D (Japanese size E cup) | Comfortable and traceless |
| Wacoal | 75E (Asian code) | Strong supporting capacity |
6. Summary
The cup corresponding to a 91cm bust needs to be judged based on complete measurement data, and cannot be determined by simple numbers. Recently, discussions on underwear comfort and size standardization have become increasingly popular on social platforms. It is recommended that women obtain accurate sizes through professional measuring tools or store services. Dressing healthily is more important than chasing a specific cup size!
check the details
check the details