Beyond the Letter: Your Guide to Bra Cups That Actually Fit

That single letter on a bra tag holds more power than you might think. It’s not a standalone grade of your bust, but a key to volume—a volume that changes depending on the number beside it. This is why a C cup isn't a universal concept; a 75C and an 85C are different worlds. Finding your fit means understanding this relationship and moving beyond the tag to how the bra actually shapes and supports you.

Decoding the Alphabet: It’s All About Proportion

The cup letter (A, B, C, D, etc.) represents a proportional volume relative to the band. As the band size increases, the volume of the same letter increases too. This creates a brilliant fitting tool: sister sizes. If the band of your usual 80C feels loose, trying a 75D (one band size down, one cup size up) can maintain similar cup volume while improving support. Conversely, if the band feels tight, an 85B might be the solution.

Remember, the letter is not an absolute measure. Your "cup size" is a starting point, and your perfect fit depends on the unique harmony between your band measurement and your breast volume.

Style as a Tool: Picking the Right Cup for Your Shape & Outfit

The cut of the cup determines your silhouette. Choosing wisely means matching the style to both your anatomy and your wardrobe.

• The Balconette: Offers a lifted, rounded shape from below with a more open neckline, perfect for enhancing cleavage under lower-cut tops.

• The Plunge: With its low center gore, this style brings breasts together front and center, ideal for deep V-necks and wrap dresses without visible bra lines.

• The Full Cup: Provides maximum coverage and support, ideal for fuller busts or when all-day stability is the priority.

• The Half-Cup/Demi: Creates a wide, open neckline, flattering under square or wide necklines and offering a subtle lift.

• T-shirt/Smooth Cup: Seamlessly moulded cups that offer a rounded, discreet shape under fitted knits and tees.

Think of function first: need smoothness? Choose moulded. Need lift? Consider balconette. Showing a deep neckline? Plunge is your friend.

The Fit Checklist: Your Body Doesn't Lie

Forget the assumed size. The true test happens on your body. Here’s your quick, essential checklist:

1. The Band is the Base: It should be snug, level around your torso, and provide 80% of the support. You should be able to fit two fingers underneath, but not pull it far away.
2. The Center Gore Lies Flat: The piece of fabric between the cups must tack perfectly against your sternum. If it’s floating, the cup is likely too small.
3. The Wires Encircle Fully: The underwire should sit right behind your breast tissue, following its natural root, without digging into your sides or breast.
   
4. The Cups Contain Smoothly: You should have a smooth line with no spillage over the top or at the sides (“double boob”), and no gaping or wrinkling of the fabric.
5. The Straps are Secondaries: They should stay put and help stabilize, but not dig in or bear the main weight. Adjust them for a comfortable fit.
6. The "Scoop and Settle" Test: Lean forward, scoop all your breast tissue into the cups, and adjust the wires into your inframammary fold. Stand up and move. Everything should stay comfortably in place.

Obsessive bras

Choosing the right bra size is key to comfort and a perfect look. Our models are available in universal broken sizes — from XS/S to 2XL/3XL. Most bras are part of lingerie sets, but a few unique models are sold individually.

Before buying, check the size charts on product pages — you’ll find exact measurements for each style.

The tables below also help you choose your size more precisely and enjoy a perfect fit.

Turning Knowledge into Confidence

The perfect bra isn’t about a standard size—it’s about the precise intersection of proportional volume, smart style selection, and personalized fit. Use size charts as a launchpad, not a final answer. Embrace trying sister sizes. Pay attention to shape (projection, width) as much as volume.

When you find the one, you’ll feel it: supported, shaped, and free from distraction. That’s when a bra transforms from a basic necessity into a tool for effortless comfort and real confidence.