5 Things I Wish I Knew Before Buying My First Nursing Bra
When I was pregnant with my first child, I bought three nursing bras before I even hit my third trimester. All three ended up stuffed in a drawer by week two postpartum. Wrong size, wrong style, wrong everything. If someone had just sat me down and told me what I actually needed to know, I would’ve saved money, avoided a lot of discomfort, and honestly, felt a whole lot better about my changing body.
So if you’re standing in front of your screen right now wondering which is the best nursing bra for you, this one’s for you. I’ve spoken to hundreds of moms through my journey, and these are the five things that almost nobody tells you before you buy.
How to Measure Your Nursing Bra Size During Pregnancy
Here’s something I didn’t know until way too late: your bra size during pregnancy is not your bra size postpartum. And your first trimester size? Definitely not your third trimester size either.
Most women go up one to two cup sizes during pregnancy, and then again when milk comes in after delivery. According to lactation consultants, breast tissue can increase by as much as 1.5 lbs per breast in the first few days after birth. That’s significant.
The right way to measure your nursing bra size is to measure your band size (just under the bust) and your cup size (at the fullest part of the breast), and do it around 36 to 38 weeks of pregnancy, not at 12 weeks. That number will be much closer to what you’ll actually need postpartum. Lovemère has a Bra Fitting Guide that walks you through this step by step, and it’s genuinely one of the clearest ones I’ve come across.
One thing nobody mentioned to me? Buy bras with extra hook-and-eye rows at the back. Your ribcage expands during pregnancy and shrinks back down postpartum, so that extra room gives you flexibility for months.
Wire vs Wireless Nursing Bra: Which One is Right for You?
I remember thinking wireless meant unsupportive. I was wrong.
Underwire bras during breastfeeding can press against milk ducts, especially in the early weeks when engorgement is unpredictable and your breasts change size almost daily. Many lactation experts recommend avoiding underwire in the first 6 to 8 weeks postpartum for this reason. Blocked ducts are painful and can lead to mastitis, which trust me, you don’t want.
Wireless doesn’t mean unsupportive though. A well-designed maternity bra uses structured fabric, wide side panels and a proper band to give you real support without the risk. In my experience, once I switched to a good wireless nursing bra, I stopped having the side-breast tenderness I’d been ignoring for weeks.
That said, if underwire is something you genuinely can’t live without, there are options. The key is fit. A properly fitted underwire that sits flat against the ribcage and doesn’t dig into breast tissue can work for some moms. But if you’re unsure, wireless is the safer and more comfortable default, especially in those early months.
When Should You Start Wearing a Nursing Bra?
Most articles will tell you “around the third trimester.” That’s a reasonable starting point, but here’s the more honest answer: start when your regular bras stop feeling comfortable. For some women that’s 20 weeks. For others it’s 32 weeks.
Nursing bras are designed to accommodate growth and provide softer, more flexible support than regular bras. They also have the nursing clip or drop-cup feature built in, which means you’re already practising the motion before baby arrives. Small thing, but it helps.
If you’re also dealing with tenderness in early pregnancy, which many women do, a soft wireless sleep bra can be a lifesaver even in the first trimester. Not a full nursing bra necessarily, but something that gives gentle support without pressure.
The one thing I’d say: don’t wait until you’re in the hospital. Have at least one good nursing bra washed and ready before your due date. You’ll thank yourself at 3am.
How Many Nursing Bras Do You Actually Need?
Fewer than you think you need before baby, more than you think you need after.
Before delivery, two to three nursing bras is a reasonable number to start with. You don’t want to invest heavily before you know your postpartum size. Many moms I’ve spoken to made the mistake of buying six bras at 35 weeks, then found none of them fit once milk came in.
Postpartum, you’ll want at least three to four in rotation. Here’s why: nursing bras get washed constantly. Milk leaks, sweat, spit-up. They take a beating. Having enough to rotate means you’re never stuck wearing a damp bra at midnight.
A smart approach is to start with two quality bras in your late-pregnancy size, then reassess at 2 to 3 weeks postpartum once your supply has regulated and your size has stabilised. At that point, stock up properly. Lovemère’s Bundle & Save collection is worth looking at here. Buying in sets works out better value and you’re less likely to end up short.
Signs Your Nursing Bra Doesn’t Fit Right (And How to Fix It)
This is probably the most overlooked part of the whole conversation. A bad-fitting nursing bra isn’t just uncomfortable. It can actively cause problems. Straps digging in, cups gaping, wires pressing on tissue. All of these can contribute to blocked ducts, poor milk drainage and real pain.
Here are the signs your nursing bra doesn’t fit right:
The band rides up at the back. This means the band is too big, so go down a size. Cups that are overflowing or wrinkling tell you the cup size is off. Straps that leave marks or fall off constantly mean the strap length needs adjusting, or the bra style isn’t right for your shoulder width. And if you feel pressure anywhere on the breast tissue, that’s a red flag, especially over milk ducts.
The fix isn’t always buying a new bra. Sometimes it’s simply adjusting the hooks or straps. But if you’ve adjusted everything and it still doesn’t feel right, trust that feeling. A bra that doesn’t fit is worse than no bra. Getting a proper fitting, even virtually, makes a huge difference.
This is part of a larger guide on building your maternity wardrobe. If you haven’t already, check out 5 Things I Wish I Knew Before My Third Trimester for the full picture beyond just bras.
FAQs
Can I wear a nursing bra all day, including at night?
Yes, many moms do, especially in the early weeks when leaking is unpredictable. Just make sure it’s a soft, wireless style if you’re wearing it to sleep. A tight band overnight can restrict circulation and press on milk ducts. Lovemère’s sleep bras are specifically designed for this.
How do I know if my nursing bra size has changed postpartum?
Your size typically stabilises around 6 to 8 weeks postpartum, once your milk supply regulates. Before that, fluctuation is completely normal. If your bra feels tight in the morning and loose by evening, that’s engorgement, not a sizing issue.
Is it okay to wear the same nursing bra every day?
Technically yes, but it’s not ideal. Daily washing wears out elastic faster, and wearing a bra before it’s fully dry can cause skin irritation. Rotating between at least two or three bras extends their life and keeps things more hygienic.
What’s the difference between a nursing bra and a pumping bra?
A nursing bra is designed for breastfeeding directly. It has drop-cups or pull-aside clips for quick access. A pumping bra holds flanges in place so your hands stay free while you pump. Some bras, like the Skye Pump Bra, do both, which is genuinely useful if you’re combination feeding.
When should I stop wearing nursing bras?
Whenever you feel ready, honestly. Some moms transition back to regular bras when they wean; others stick with nursing bras longer because of the comfort. There’s no rule here. Your body, your timeline.
