The Underwire
ThirdLove pinot mocha t-shirt bra and

Bra 101 8 min read

Bra Sister Sizes: The Secret Every Woman Should Know

Quick Summary

Finding the perfect bra size can feel complicated, but understanding sister sizes might make the process easier. Sister sizes are groups of bra sizes that share the same cup volume but differ in band size. For example, a 34C has the same cup volume as a 36B or 32D, offering more flexibility when shopping f...

Read More

August 24, 2023

Latest

All Posts

How to Perform a Self Breast Exam

January 05, 2026 2 min read

How to Perform a Self Breast Exam
Bras for Women Who Hate Bras

March 08, 2025 3 min read

Bras for Women Who Hate Bras
Are Cotton Bras Supportive?

March 07, 2025 3 min read

Are Cotton Bras Supportive?
Which Bra Is Suitable for Flat Chests?

February 21, 2025 3 min read

Which Bra Is Suitable for Flat Chests?
Why Is My Bra Gaping At The Top?

February 17, 2025 4 min read

Why Is My Bra Gaping At The Top?
What Is A Demi Bra & How Should It Fit?

February 10, 2025 3 min read

What Is A Demi Bra & How Should It Fit?
The Best Push Up Bras For Small Breasts

February 08, 2025 3 min read

The Best Push Up Bras For Small Breasts
1 2 3 … 22