Predicting Your Nursing Bra Size - A Guide for First Time Moms

First-time moms have a lot to deal with as they prepare to receive their new bundles of joy and after delivery. Furniture needs to be moved. Nursery rooms have to be stocked with an array of items ranging from crib to nightlight. Oh!.. and what about that college fund! Besides, many of our boss mommas want to be ahead of the curve and get their nursing bras inventory stocked up as well.

However, new moms often find themselves confused by their changing bodies throughout pregnancy, lost in a dilemma to predict their respective perfect nursing bra sizes. Are you in such confusion? Don’t worry. Here’s some guidance.

Word of Caution: Everything is changing 

As you adjust your budget to factor in the needs of the expected little one and stock your house with the necessary items, your body also changes day by day to accommodate the new attached life safely. Besides experiencing a significant weight gain and some weird cravings, your breasts will look and feel very different from how they were before the pregnancy. They might be itchy as a result of skin stretching as they grow.

And they will begin to grow from approximately the sixth, seventh or eighth week of your pregnancy and continue getting bigger up to the time you’ll deliver or start to breastfeed.

Most first time mothers experience a breast growth of one cup size or two by the time they are starting to nurse their babies. For that reason, with time during pregnancy, your regular bras will be too small to hold your grown breasts.

It is recommended to purchase your size at around 8 months into your pregnancy as this will be approximately the same cup size 4+ weeks postpartum.

Measuring Fit: Step by Step Process

1) Get your band measurement

Use a measuring tape to measure tightly and evenly around the bottom band of the bra, directly under your breasts. If the number is even, add 4. If the number is odd, add 5. That’s your band size.

Example: Bottom band measurement is 30 inches. Add 4 (as it is an even number), and you will get a band size of 34. 

2) Establish your cup size

Wrap the measuring tape around your breasts at the fullest part (which should be nipple level). Record the measurement and round it off to the nearest full number if it isn’t.

Then, subtract your band size figure from the value you got here. The difference is your cup size. Each inch difference is a cup size. E.g. 1 inch difference is an A cup, 2 inch difference is a B cup, and so forth.

Example: Measurement of breast size at the fullest part is 37 inches. 37 subtract 34 (band size) equals 3, and you will have a cup size of C. Final suggested bra size would be 34C.

What to Expect

Measurements are just starting point and your actual bra size may vary from these measurements. It is recommended to visit a boutique or shop that can help you get professionally measured and fitted.

Shop our best-selling maternity bras here >>

July 06, 2019 — Autoketing Plus Collaborator
Tags: nursing bras

Everything you need to know about nursing bras

Our boss mommas are the backbones of their families. There are more than enough things for a mom to deal with throughout the day so why add one more to the list?

We are talking about nursing. You have to nurse many times a day and those times a normal can just get in the way. In today’s blog post we are going to look at a special type of maternity bras made specifically for the nursing mother. Here is a complete deep dive into nursing bras.

Nursing Bras Explained By Mori Bay

Why get a nursing bra

Babies have small stomachs. They need to eat often. That means at least 5-7 times a day a mother has to go and breastfeed her child.

The problem is that when you have to breastfeed that often, you have to take your bra on and off repeatedly throughout the day. This has the potential to cause chafing. A nursing bra can specially address the breastfeeding mother because its cups can fold down to expose the nipple. This makes breastfeeding much more convenient.

Nursing bras also help address another issue. A breastfeeding woman’s breast can fluctuate in size throughout the day. A bra that is not designed to accommodate this issue can be accidentally too tight and very uncomfortable.

And when the breast gets too constricted, milk supply can be restricted. In worst case scenarios, your bra can actually be the cause of plugged milk ducts and potentially get infected.

The most common types of nursing bras available

Manufacturers have made a number of different nursing bras. There are some subtle differences between how they work. We are going to classify nursing bras based on their design.

Check out our maternity nursing bra line collection at Mori Bay

How they open: Easy-click open and close cups or Foldover Cups?

Nursing bras with easy-click open and close cups have cup flats with fasteners that attach the cups to the straps. This means you can easily open and pull the cups down to breastfeed by simply unfastening them.

Open and Close Fasteners on a Nursing Bra

A foldover cup style nursing bra design (can also be called ‘cross-over cup style’) on the other hand has a more low cut design with stretchy fabric so that moms can pull down one side o the bra and slip the breast out for feeding.

Different Nursing Bra Styles:

Just like regular bras, nursing bras come in a variety of styles that accommodates what you are looking for at that point of time.

    • Nursing Bralettes (our pick) - These are our top recommended style nursing bras because a bralette style means that you can have softer cups that allow for the maximum amount of comfort throughout the day (check out some of our top nursing bralettes)
    • Wirefree nursing Bras - Moms heading out to the work day can appreciate the comfort of having a wirefree nursing bra but with the additional flexibility for fluctuations in sizes
    • Underwire nursing bras - Having an underwire adds support and meets more professional attire requirements in the workplace but at the same time, we recommend that you limit the hours you spend wearing these to avoid potential interference with milk flow
  • Sports bras - Moms need to stay active too. There are active-style nursing bras in the market for the moms getting in their workout.
  • Regardless of their differences, the main goal is simple: To make breastfeeding easier and more convenient.

    How to pick a good nursing bra?

    What should you be looking for in a nursing bra? When we are choosing our nursing bras for our boss mommas, we always have comfort first in our mind. We know that our moms want to wear to something that can deal with all the changes and challenges that a breastfeeding woman presents to her lingerie.

    Comfortable design and fabric

    Because the breast in the breastfeeding stage is going to fluctuate in size throughout the day, your nursing bras have to be stretchy to accommodate.

    In addition, the breast can experience tenderness throughout the day so you want your bra to be made out of fabric that is gentle, soft to the touch, and as comfortable as possible. Some of the fabrics we have chosen for our nursing bras are spandex and cotton and 

    Adjustments allowed

    Even taking into account the fabric and the design, there are going to be times throughout the day where you will need a little adjusting.

    To accommodate for this, Mori Bay looked for nursing bras that can allow for large adjustments in band sizes with at least four rows of hook-and-eye closures.


    Nursing bras are a fantastic new addition to our arsenal of bras and we hope that you have learned about just how helpful having and wearing one can be for your daily life as a mother. We here at Mori Bay have selected some of the best nursing bras in the land for you. Check out our collection of nursing bras.

    April 04, 2019 — Mori Bay
    Tags: nursing bras