How to Know Your Boob Size: Expert Guide
How to Know Your Boob Size: Expert Guide to Finding the Right Fit
Wearing the wrong bra size is more common than you might think. Many women go years without realizing their bras don’t actually fit properly—leading to discomfort, back pain, or a less-than-flattering silhouette. At Olivia Paisley Intimates, we specialize in helping women find the perfect fit—starting with one simple question: How do I know my boob size?
This expert guide walks you through everything you need to know to determine your correct size, so you can shop smarter, feel supported, and look amazing.
Why Knowing Your Boob Size Matters
Your “boob size” is more than just a number—it’s the foundation of how your bra supports your bust. A proper fit impacts:
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Comfort – No more digging straps, slipping bands, or overflowing cups
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Posture – Better support for your back and shoulders
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Confidence – When your bra fits right, your clothes fit better
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Longevity – The right size extends the life of your lingerie
How to Measure Your Boob Size at Home
You’ll need a soft measuring tape, a mirror, and preferably no padded bra while measuring.
1. Measure Your Band Size (Underbust)
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Wrap the measuring tape firmly around your ribcage, directly under your bust.
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Keep it level across your back.
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Round the measurement to the nearest whole number.
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If even, add 4. If odd, add 5.
Example: 31" + 5 = 36 band size
2. Measure Your Bust Size (Overbust)
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Measure around the fullest part of your boobs, usually across the nipples.
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Keep the tape comfortably snug but not tight.
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Round to the nearest inch.
Example: 39" bust measurement
3. Find Your Cup Size
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Subtract your band size from your bust measurement.
39" - 36" = 3"
A 3-inch difference equals a C cup.
| Difference (inches) | Cup Size |
|---|---|
| 1" | A |
| 2" | B |
| 3" | C |
| 4" | D |
| 5" | DD/E |
| 6" | DDD/F |
Final bra size: 36C
Pro Tips for Better Accuracy
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Measure while standing upright, shoulders relaxed.
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Take measurements twice to ensure accuracy.
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Don’t pull the tape too tight—your bra should support, not squeeze.
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Recheck your size every 6-12 months, especially after weight changes, pregnancy, or hormonal shifts.
Need Help? Visit Olivia Paisley Intimates
Professional fittings can make all the difference. At Olivia Paisley Intimates, we offer:
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In-store bra fittings by trained experts
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Fit consultations for both in-person and virtual customers
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A wide selection of bras for every boob shape and size, from petite to fuller busts
Whether you’re shopping for everyday comfort or special-occasion support, our stylists are here to help you feel your best—inside and out.
Final Thought: The Right Fit Changes Everything
Knowing your boob size is the first step to loving how your bra fits, feels, and flatters. Take the time to measure, or better yet, let the pros help you find your perfect match. Because at Olivia Paisley Intimates, comfort and confidence are always in style.
