Mastectomy Bras for Large Cup Sizes: A UK Guide for G, H and J Cups

If you wear a G, H or J cup and you've had breast surgery, you already know the problem: most mastectomy bras stop at a DD or an E cup. Specialist retailers focus on smaller cup sizes, and the handful of larger-cup options that do exist rarely go beyond a 44 back. For women in sizes 40G, 42H, 44J or 46J, the message from most of the market is, essentially, that you don't exist.

You do exist. And finding a comfortable, supportive mastectomy bra in a larger cup size is entirely possible — it just requires knowing where to look and what to look for.

Why Larger Cup Sizes Are Underserved in Mastectomy Lingerie

The majority of mastectomy bra ranges are designed around smaller cup sizes for a straightforward reason: mainstream lingerie brands stop at a DD or E cup and simply extend their standard designs with a prosthesis pocket. Specialist mastectomy retailers tend to follow the same size conventions, which means women who needed G, H or J cup bras before surgery are left to piece together their own solutions.

This matters more than it might seem. After mastectomy or lumpectomy, your remaining breast tissue still needs proper support. If you had a large bust before surgery, the remaining side — or the breast tissue remaining after a lumpectomy — is often heavier and needs the kind of structured, wide-strap, deep-underband support that only comes with a properly fitted bra in your actual size. A bra that's too small in the cup will shift, dig and put pressure on exactly the scar tissue and lymph node sites you need to protect.

What to Look for in a Large-Cup Mastectomy Bra

The features that matter most for post-surgery comfort apply to all cup sizes, but they become even more important when the cup is larger and the remaining breast tissue heavier.

Wide, cushioned shoulder straps

Narrow straps concentrate all the weight of a heavier bust onto a small area of shoulder. After lymph node removal, this can be uncomfortable and, at worst, contribute to lymphoedema risk. Look for straps that are at least 2–3 cm wide with soft cushioning. A vest-style back panel — which anchors straps further apart and distributes load across the whole back — is particularly useful for G cup and above.

A deep, supportive underband

In a properly fitted bra, the majority of support should come from the underband rather than the straps. For larger cups this is especially true. The underband needs to be firm enough to do that job without digging into post-surgery swelling. Look for soft, wide underbands that avoid the area immediately beneath the wound.

Front fastening

Reaching behind your back to fasten a bra puts significant strain on the chest and shoulder — impossible in the early weeks post-surgery, and painful for longer than most people expect. A front-fastening design — hook-and-eye or zip — removes this problem entirely. It also makes the bra much easier to manage if arm mobility is restricted long-term.

Bilateral prosthesis pockets

Even after unilateral (single-side) mastectomy, having bilateral pockets — one on each side — gives you flexibility. You can use the pocket on the surgery side to hold a breast form or softie, and leave the other empty, or use both pockets if you prefer a more balanced silhouette. For bilateral mastectomy, both pockets are essential.

Non-wired design

Underwires near scar tissue or lymph node sites are not recommended in the months following surgery, and many women find they prefer to stay wire-free long-term. A non-wired large-cup mastectomy bra relies on cup structure, wide underbanding and a well-fitted back size to provide the support that a wire would normally contribute. Getting the back size right is especially important here — a 40G in a non-wired bra will give far better support than a 44E, even if your measurements might technically fit either.

High cotton content

Sensitive post-surgical skin and radiotherapy sites react poorly to synthetic fabrics. A high cotton or cotton-blend lining reduces friction, allows the skin to breathe and is far less likely to cause irritation. Look for 90% cotton or higher if skin sensitivity is a concern.

Getting the Right Size After Surgery

Your bra size almost certainly changed as a result of surgery. Post-mastectomy swelling, changes in breast shape and the repositioning of tissue all affect how a bra fits — often for six months or more. Here's a practical approach:

• Measure your band size fresh. Use a soft tape measure snugly around your ribcage beneath the bust. This is your band size. Don't assume it's the same as before surgery — swelling and post-operative changes in posture can shift it.
• Assess your cup size on the remaining side. Cup depth and shape change after surgery. Try a range of cup sizes; the cup should enclose all breast tissue without gaping or overflowing.
• Start with the loosest hook position. A new mastectomy bra should fasten comfortably on the loosest (outermost) hook. As the elastic softens with washing, you move to tighter hooks. If you need the tightest hook on day one, the band is too big.
• Allow for swelling. In the first few weeks, swelling can make a correctly sized bra feel tight by the end of the day. A bra with some stretch in the back — cotton-Lycra rather than rigid elastic — is kinder during this period.

Our Mastectomy Bras: What We Stock and Who They're For

At Orchid Fashion Boutique we specialise in lingerie for larger sizes, which means our mastectomy range is built for women who need real support in extended back sizes. Our post-surgery mastectomy bras are all non-wired, all front-fastening and all made with a high-cotton lining to protect sensitive skin.

Key features across our mastectomy range:

• Front hook-and-eye fastening — no reaching, no twisting
• Bilateral envelope pockets for breast forms or softies on both sides
• 90% cotton, 10% elastane blend — soft, breathable, skin-friendly
• Wide vest-style back with cushioned straps for weight distribution
• Wire-free with a seamless inner lining — safe against scar tissue
• Available in band sizes 34 to 48

Free UK delivery. 30-day no-quibble returns. We know that buying lingerie after surgery is a significant step, and we want the process to be as simple and reassuring as possible.

Shop our mastectomy bra collection

Do I need a mastectomy bra or will a regular bra do?

In the early weeks after surgery, a dedicated mastectomy bra is strongly recommended. The pocketed cups hold a breast form or softie securely, and the non-wired, front-fastening design protects healing tissue far better than a standard bra adapted with a pocket insert. Once you're fully healed, some women return to regular bras; others prefer to stay with mastectomy styles for the long term. Both are valid choices

Can I wear an underwired bra after mastectomy?

Most breast care nurses and surgeons recommend avoiding underwired bras for at least six months post-surgery. Underwires can press on lymph node removal sites and scar tissue, causing discomfort and potentially contributing to complications. Many women find that a well-fitted non-wired bra in the correct size provides equivalent support without the risks.

What size breast form do I need after mastectomy?

Breast form sizing is based on your bra cup size and the weight of the form needed to balance your remaining breast tissue. Your breast care nurse or a specialist fitter can advise on this; most recommend a fitting appointment six to eight weeks after surgery once the initial swelling has settled.