Service title
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Description about fit
Service title
Apparel Fit
Accurate garment measurements to help you shop smarter and feel confident.
Find your true bra size with data-driven sizing across brands.
Fit Insight
Most brands tell you to add 4 inches to your ribcage. That’s old math designed to fit more women into fewer sizes. Trust your ribcage measurement—it's the 'True Math' of support.
Note: If you don't see a cup size, double-check that your Full Bust measurement is in the bottom box.
Bra Logic
Standard Size
Sister Size (Need Tighter Band)
Sister Size (Need Looser Band
The "Vera Method" Measuring Guide
The Level Tape
Keep the tape parallel to the floor–never angled.
The "Exhale" Rule
Measure on a natural exhale for a "True" waist.
Snug, not "digging in." If skin indents, the math is wrong.
The Tension
Retailers use 'Vanity Sizing' to influence buyer emotion. Fit Logic uses the 2026 ASTM Standardized Measurement Tables
for a neutral, data-driven baseline.
Shop the measurement, not the label.
Retailers use 'Vanity Sizing' to influence buyer emotion. Fit Logic uses the 2026 ASTM Standardized Measurement Tables
for a neutral, data-driven baseline.
Shop the measurement, not the label.
