Measure yourself accurately to find your perfect fit
Your Bra Size
Cup Size Guide: A (1″), B (2″), C (3″), D (4″), DD (5″), E (6″), F (7″), FF (8″), G (9″), GG (10″), H (11″), HH (12″)
Table of Contents
The Ultimate Guide to Finding Your Perfect UK Bra Size
Introduction
Finding the right bra size can be a frustrating experience. Studies show that 80% of women wear the wrong bra size, leading to discomfort, poor posture, and even long-term health issues. Whether you're shopping online or in-store, knowing your correct UK bra size is essential for comfort, support, and confidence.
This comprehensive guide will walk you through:
✅ How to measure your bra size accurately
✅ Understanding UK bra sizing vs. other systems
✅ Common bra fitting mistakes to avoid
✅ How to use a bra size calculator (UK)
✅ Tips for finding the perfect fit for different breast shapes
By the end of this guide, you'll be able to determine your correct bra size and choose styles that enhance your comfort and silhouette.
Why Is Wearing the Right Bra Size Important?
Wearing an ill-fitting bra can cause several problems, including:
- Back and shoulder pain (from lack of support)
- Poor posture (due to straps digging in or slipping)
- Skin irritation and chafing (from tight bands or wires)
- Breast tissue damage (from overly tight cups)
- Unflattering silhouette (quad-boob effect, gaping cups, or sagging)
A well-fitted bra should:
✔ Feel comfortable all day (no digging, slipping, or tightness)
✔ Provide proper support (lifting without strain)
✔ Smooth your silhouette (no bulges or gaps)
✔ Stay in place (no riding up or shifting)
How to Measure Your Bra Size (UK System)
The UK bra sizing system uses band size (number) and cup size (letter). To find your size, you’ll need:
- A soft measuring tape
- A non-padded bra (for accurate bust measurement)
- A mirror (optional, to check positioning)
Step 1: Measure Your Underbust (Band Size)
- Stand straight and wrap the tape snugly around your ribcage, just below your breasts.
- Ensure the tape is parallel to the floor and not too tight.
- Note the measurement in inches.
Calculating Band Size:
- If the number is even, that’s your band size (e.g., 32").
- If it’s odd, round up to the nearest even number (e.g., 33" → 34).
Step 2: Measure Your Bust (Cup Size)
- Wear a non-padded bra and measure around the fullest part of your bust.
- Keep the tape level without squeezing too tight.
Step 3: Calculate Cup Size
Subtract your band size from your bust measurement. The difference determines your cup size:
| Difference (inches) | UK Cup Size |
|---|---|
| 0-1" | AA |
| 1" | A |
| 2" | B |
| 3" | C |
| 4" | D |
| 5" | DD |
| 6" | E |
| 7" | F |
| 8" | FF |
| 9" | G |
| 10" | GG |
| 11" | H |
| 12" | HH |
Example Calculation:
- Underbust: 31" → Band size 32
- Bust: 36" → Difference = 4" → D cup
- Final size: 32D
Using a Bra Size Calculator (UK)
If manual calculations seem tricky, an online bra size calculator can help. Here’s how they work:
- Enter your underbust and bust measurements (in inches).
- The calculator determines band and cup size automatically.
- Provides UK sizing recommendations (some adjust for sister sizes).
Try Our Bra Size Calculator
(Embed the HTML calculator provided earlier or link to a tool.)
Common Bra Fitting Mistakes to Avoid
Even with accurate measurements, many women make these mistakes:
1. Wearing a Too-Loose Band
- The band should provide 80% of the support, not the straps.
- Test: If you can pull it more than 2 inches away, it’s too big.
2. Choosing the Wrong Cup Size
- "Spillage" (quad boob) = Cup too small.
- Gaping = Cup too big or wrong shape.
3. Ignoring Sister Sizing
- If your usual size feels off, try a sister size (e.g., 34C → 32D or 36B).
4. Not Adjusting Straps Properly
- Straps should be snug but not dig in. Adjust them every few wears.
5. Wearing an Old, Stretched-Out Bra
- Bras lose elasticity over time. Replace every 6-12 months with regular wear.
Bra Styles for Different Breast Shapes
Not all bras work for every shape. Here’s a quick guide:
| Breast Shape | Best Bra Styles |
|---|---|
| Full on Bottom | Balconette, Plunge |
| Full on Top | Full-cup, T-shirt bras |
| Wide-Set | Front-closure, Side-support |
| Close-Set | Low-gore, Plunge |
| Asymmetric | Padded or adjustable cup |
| Small Chest | Push-up, Bralette |
| Large Chest | Full-support, Underwire |
FAQs About UK Bra Sizing
Q: Why does my bra size vary between brands?
A: Different brands use slightly different sizing methods. Always check their size guide before buying.
Q: Should I measure myself or get professionally fitted?
A: Both work! Self-measuring is convenient, but a professional fitting (e.g., at Marks & Spencer or Bravissimo) ensures precision.
Q: How often should I remeasure?
A: Every 6 months or after weight changes, pregnancy, or hormonal shifts.
Q: What if my cup size is above HH?
A: Some UK brands (like Panache or Elomi) specialize in larger cup sizes (up to K+).
Final Thoughts
Finding the right bra size shouldn’t be a guessing game. With the right measurements and a UK bra size calculator, you can ensure a comfortable, supportive fit. Remember:
🔹 Measure regularly (bodies change over time).
🔹 Try different styles for different outfits.
🔹 Prioritize comfort over trends.
Now that you know how to measure and calculate your UK bra size, it’s time to say goodbye to ill-fitting bras and hello to confidence!