28I Bras
What is a 28I in other brands?
181 bras tracked in 28I · 2 brands · See all I cup
Your 28I across brands
A 28I isn’t the same in every brand. Here’s how a standard US 28I translates across the brands we track — and how each one runs.
Editorial buying guide
Read →Read the 28I buying guide
Top picks, sister sizes, and how to spot a good 28I fit.
Sister sizes
