How a Carriwell nursing bra is designed
A Carriwell nursing bra is a seamless, underwired bra that can be opened with one hand while you hold your baby in the other. The clip opens at the shoulder strap, allowing the cup to fold down and provide easy access to the breast, and then clicks back into place. That's the whole point: nursing should be quick and easy, even when you're alone with a hungry baby.
Carriwell has been making seamless maternity and nursing wear for almost three decades and was one of the first in the world to do so. Seamless doesn't just mean no seams. It means the bra shapes itself to your breast instead of squeezing it into a fixed shape. This is important during nursing because your breasts change size several times a day, depending on how full they are. A soft, stretchy fabric without underwires adapts to these changes without constricting. You'll find the full range in the maternity and nursing bra collection.
This is why Carriwell nursing bras are wire-free
Underwires can put pressure on the milk ducts, and if a milk duct is repeatedly compressed, milk can build up and, in the worst cases, lead to mastitis. That's why Carriwell nursing bras are wire-free. Support comes instead from a wide underband, stretchy fabric, and a fit that lifts without squeezing.
If you're used to the firm support of an underwired bra, it may feel unfamiliar at first. But many people find that a soft, wire-free bra is actually more comfortable when their breasts are tender and full. If you'd like to read more about the considerations, we've compiled them in the wire-free nursing bra collection. If you're unsure, feel free to speak with your midwife or health visitor if you experience tender lumps or redness in your breast.
When during pregnancy should you buy your nursing bra?
One of the most common questions is about timing. Many people buy their first nursing bra around weeks 36 to 38, just before their due date. By then, your breasts have usually reached a size close to what they'll be during your first few days of nursing, so you avoid buying too early and getting the wrong size.
This doesn't mean you should wait until the very last moment. It's reassuring to have a couple of bras ready in your hospital bag so you don't have to worry about shopping while you have a newborn. At the same time, remember that your breasts will become extra full when your milk comes in a few days after birth. That's why it's a good idea to choose a model with good elasticity rather than one that fits tightly right away. If you're packing your bag, you can find a complete hospital bag checklist with us.
How to find your size
It's completely normal to feel a bit unsure about sizing when your body changes so much. A nursing bra needs to accommodate your breasts as they change in fullness throughout the day, which is why seamless models are often available in sizes such as S, M, and L instead of traditional cup sizes. This makes it easier to get the right fit when you don't yet know your final nursing size.
The underband should sit horizontally across your back and feel secure without digging in, while the cup should enclose your breast without leaving excess fabric or causing the fabric to bulge at the edges. If you're unsure which size to choose, use our bra size guide. If the bra feels too tight around your back, a bra extender can provide extra room during the first few weeks, when your ribcage may also be slightly larger.
Original, Gel-Support, or silky soft
Carriwell offers several nursing bras, each designed to meet slightly different needs. The seamless original maternity nursing bra is the classic seamless model that many people wear all day and night throughout pregnancy and nursing. If you'd like to have a couple on hand from the start, it's also available as a 2x Seamless Original Maternity Nursing Bra.
If you're looking for slightly firmer support and a more flattering lift under your clothes, the gel-support maternity & nursing bra is a good choice, with soft support replacing the underwire. If you prefer a smooth surface and moulded cups that don't show your nipples through your clothes, you can look at the gel-support padded maternity & nursing bra. And if your skin is extra sensitive after birth, the silky soft nursing bra is particularly gentle on the skin. If you prefer a natural material close to your body, there's also an organic maternity and nursing bra.
A nursing bra for nighttime
At night, you usually need something different from what you need during the day. Your breasts may become full and leak while you sleep, and a loose bra won't provide the soft support needed to keep nursing pads in place. At the same time, a nighttime bra shouldn't have hard details or tight straps that dig in when you lie down for hours.
That's why a dedicated maternity and nursing sleep bra is made extra soft and free from anything that can dig into the skin. It opens the same way as a regular nursing bra, making nighttime nursing and the early morning hours as easy as possible. If you use nursing pads overnight, you may want to choose reusable organic cotton nursing pads, which are soft against the skin.
How to wash and care for your bra so it lasts
A nursing bra gets a lot of use. It's often worn day and night and needs to withstand milk, sweat, and frequent washing. To help the stretchy, seamless fabric retain its shape for as long as possible, it's a good idea to wash it at a low temperature and avoid tumble drying, which can wear down the elasticity over time. If milk has leaked, rinse the bra before putting it in the laundry basket to prevent stains from setting.
A good idea is to have at least two or three bras to rotate. That way, you'll always have a clean, dry one ready while the others are being washed and air-drying, and each bra will last longer because you won't have to wear it every day. That's why a two-pack is practical from the start.
When your milk comes in
During the first few days after birth, your breasts will be soft, and only small amounts of colostrum will be produced. Then, typically two to four days after birth, mature milk will come in, and your breasts may suddenly become significantly larger, warm, and full. Many people describe it as feeling hard and full from one hour to the next.
That's exactly why it's worth having an elastic, wire-free nursing bra ready. It accommodates the fullness without squeezing, and you won't find yourself without something to wear on the very days your breasts change the most. If you'd like to better understand how your body changes, we've written about the development of nursing breasts. And remember: there's no right or wrong way for your body to change or for your milk to come in. Reach out to your midwife or health visitor if anything feels wrong or causes you pain.
