How to Measure Your Bra Size: A Comprehensive Guide for Perfect Fit

Finding the right bra size is essential for comfort, support, and confidence. Whether you’re shopping online or in-store, knowing your exact measurements ensures you choose the perfect fit. Follow these step-by-step instructions to measure your bra size accurately at home.

Step 1: Gather Your Tools

All you need is a soft measuring tape, a mirror, and a non-padded bra (or go braless for precision). Ensure the tape lies flat against your skin without digging in.

Step 2: Measure Your Band Size

1. Position the Tape: Stand upright with your feet shoulder-width apart. Wrap the tape snugly around your ribcage, just below your breasts, where a bra band sits.
2. Breathe Normally: Take a deep breath in and out, allowing the tape to settle comfortably. Ensure it’s parallel to the floor.
3. Calculate: Round the measurement to the nearest whole number. If even, add 4 inches; if odd, add 5 inches. For example, a 32-inch measurement becomes 36, and 33 inches becomes 38.

Step 3: Measure Your Bust Size

1. Locate the Fuller Part: Lean forward slightly and measure around the fullest part of your breasts, ensuring the tape passes over your nipples.
2. Stay Level: Keep the tape horizontal and relaxed, not too tight.
3. Note the Measurement: Round to the nearest whole number.

Step 4: Determine Your Cup Size

Subtract your band size from your bust measurement to find the cup size difference:

• AA: 1 - 2 inches
• A: 2 - 3 inches
• B: 3 - 4 inches
• C: 4 - 5 inches
• D: 5 - 6 inches
• DD/D: 6 - 7 inches (varies by brand)
• E+/F: 7+ inches

Example: If your band size is 34 and bust is 37 inches, your cup size is C (37 – 34 = 3 inches). Your bra size is 34C.

Step 5: Adjust for Sister Sizes

Brands may vary in fit, so use sister sizes if needed:

• Too tight in the band? Go up a band size and down a cup (e.g., 34C → 36B).
• Too loose in the band? Downsize the band and upsize the cup (e.g., 34C → 32D).

Step 6: Check for Proper Fit

1. Band Placement: The back of the band should sit level with the front, not riding up.
2. Cup Coverage: No spillage or gaps. Adjust straps to lift breasts gently.
3. Underwire Alignment: Underwires should lie flat against your ribcage, not dig into breasts.
4. Strap Comfort: Straps shouldn’t dig into shoulders. Tighten them after adjusting the band.

Common Questions Answered

• Why do my straps fall? A loose band or stretched elastic might be the culprit. Try sister sizes or replace old bras.
• Can pregnancy change my size? Yes! Hormonal shifts can alter breast size temporarily or permanently. Re-measure regularly.
• What if my measurements are between sizes? Round up for comfort, especially if you prefer a looser fit.