Bra Size Guide
Find Your Perfect Bra Size
Every Platinum Door PinUp bra is handmade using US bra sizing. For the best fit, take both measurements while wearing an unpadded bra. Keep the measuring tape comfortably snug, level around your body and parallel to the floor.
Step 1: Measure Your Band Size
Wrap the measuring tape directly beneath your bust where the bra band naturally rests.
| Snug underbust measurement | Your band size |
|---|---|
| 31–32 inches | 32 |
| 33–34 inches | 34 |
| 35–36 inches | 36 |
| 37–38 inches | 38 |
| 39–40 inches | 40 |
If your measurement falls between two sizes, choose the larger band for a more comfortable fit or the smaller band for a firmer, more supportive fit.
Step 2: Measure Your Cup Size
Measure around the fullest part of your bust without pulling the tape too tightly. Subtract your snug underbust measurement from your full-bust measurement. The difference determines your cup size.
| Difference between bust and underbust | US cup size |
|---|---|
| 1 inch | A |
| 2 inches | B |
| 3 inches | C |
| 4 inches | D |
| 5 inches | DD |
| 6 inches | F |
In The Platinum Door PinUp sizing, an F cup represents a 6-inch difference and may be called a DDD or F by other US lingerie brands.
Example
If your snug underbust measures 32 inches and the fullest part of your bust measures 36 inches:
36 − 32 = 4-inch difference
Your recommended bra size is 32D.
How Your Bra Should Fit
A properly fitted bra should have:
-
A band that sits level across your back without riding upward
-
Cups that fully contain your breasts without spilling or gaping
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A center front that rests comfortably against your chest
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Straps that stay in place without digging into your shoulders
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Underwires that surround your breast tissue without resting on it
Your new bra should fit comfortably on the loosest hook. This allows you to move to the tighter hooks as the band naturally relaxes over time.
Need Help Finding Your Size?
Because every Platinum Door PinUp piece is handmade, we are happy to help you choose your best size before ordering. Contact us with your snug underbust and full-bust measurements for personal sizing assistance.
This guide is designed specifically for The Platinum Door PinUp bras. Sizing can vary between lingerie brands, so please measure yourself before ordering rather than relying only on the size of another bra.