Answer (1 of 17): It's important to note that breast size can vary widely among individuals, and there is no universally "average" cup size for 21-year-old girls or any other age group. Breast development and size are influenced by factors such as genetics, hormonal changes, weight fluctuations
A Comprehensive Guide to Marketing on Quora, According to Quora's Head of Product Marketing
Does breast size follow a normal distribution? - Quora
Euphoria's Sydney Sweeney Answers Your Questions
Lactose Intolerance: Symptoms, Causes, Tests, and More
A Comprehensive Guide to Marketing on Quora, According to Quora's Head of Product Marketing
What is the Average Breast Size of a Woman ?
Is 36D an average bra size for a 16-year-old? - Quora
I wear a 32D bra size. Why does it look so small? - Quora
Can you get pregnant on your period? - Flo
What's your bra size? - Quora
Is a 32C bra size too big? - Quora
For a 160 cm tall girl with a weight of 50 kg and a waist of 25 inches, is it strange to have size 32D bra? (US size) - Quora
What is the average bra size in America? - Quora
What is the body size of a 19-year-old girl? - Quora
Is 36B an average bra size for a 21-year-old? - Quora