Researchers determined that the average American woman's clothing size is between a 16 and 20w
These women are different heights and shapes but are considered to be UK's 'Mrs Average' because they're size 16
Size 12 is Britain's 'ideal' dress size
International Dress Size Conversion Chart
When 'plus-size' is average, why consider it niche? - Boulder Weekly
What is the average women's jeans size? In America, it's impossible to know.
Clothing sizes - Wikipedia
The 'average' US woman is a size 16, not 14, study finds
A brief history of sizing systems, by Sizolution Team, Sizolution
These 'Mrs Average' women are all 11st but they feel VERY differently about it
Don't Fixate on a Number: The Healthiest Weight Range Is Different for Every Body
How women's bodies have changed since 1957, The Independent
Dress Size Calculator