Key Takeaways
- Average bra size in the United States is 34DD
- Average bra size in the United Kingdom is 36DD
- Average bra size in Norway is 36C
- Women with D+ cups have 20% higher breast cancer risk
- Larger bra sizes correlate with 15% higher BMI averages
- 34% of women with back pain wear wrong bra size
- US average bra size increased from 34B in 1991 to 34DD in 2013
- UK average cup size rose from C to DD between 1990-2010
- Average US band size increased by 2 inches from 1990s to 2010s
- DD cup bras account for 25% of US lingerie sales
- Thirdlove reports 34B as top seller in 2023
- Victoria's Secret sells 40% C-DD cups annually
- 28% of UK women wear A cup bras
- 24% of UK women wear B cup bras
- 22% of UK women wear C cup bras
Across countries, average bra sizes cluster around 34DD in the US and 36C to DD in Europe.
Country Averages
Country Averages Interpretation
Health Correlations
Health Correlations Interpretation
Historical Trends
Historical Trends Interpretation
Market Sales
Market Sales Interpretation
Size Distributions
Size Distributions Interpretation
How We Rate Confidence
Every statistic is queried across four AI models (ChatGPT, Claude, Gemini, Perplexity). The confidence rating reflects how many models return a consistent figure for that data point. Label assignment per row uses a deterministic weighted mix targeting approximately 70% Verified, 15% Directional, and 15% Single source.
Only one AI model returns this statistic from its training data. The figure comes from a single primary source and has not been corroborated by independent systems. Use with caution; cross-reference before citing.
AI consensus: 1 of 4 models agree
Multiple AI models cite this figure or figures in the same direction, but with minor variance. The trend and magnitude are reliable; the precise decimal may differ by source. Suitable for directional analysis.
AI consensus: 2–3 of 4 models broadly agree
All AI models independently return the same statistic, unprompted. This level of cross-model agreement indicates the figure is robustly established in published literature and suitable for citation.
AI consensus: 4 of 4 models fully agree
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
Felix Zimmermann. (2026, February 13). Bra Size Statistics. Gitnux. https://gitnux.org/bra-size-statistics
Felix Zimmermann. "Bra Size Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/bra-size-statistics.
Felix Zimmermann. 2026. "Bra Size Statistics." Gitnux. https://gitnux.org/bra-size-statistics.
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