Breast Size During Pregnancy: What to Expect

Does pregnancy affect breast size? The answer is yes – it’s very common for breasts to become larger and fuller during pregnancy.  Your breast size will increase rapidly during the second semester when the baby is growing, and the breasts are preparing for nursing. However, this increase in size may also be due to weight gain during pregnancy (skip straight to the breast size during pregnancy size charts)

Breast Size During Pregnancy: What to Expect
Photo by Jan Kopřiva on Unsplash

In this blog post, we’ll discuss what to expect regarding breast size changes during pregnancy. We’ll also provide tips on how to deal with any discomfort that may come along with them!

Jump right into the Frequently Asked Questions

Related: Maternity Clothes Size Chart And Sizing Guide, Maternity Pants Size Chart And Fitting Guide, Maternity Legging Size Chart And Fitting Guide, Maternity Tank Top Size Chart And Sizing Guide

Breast Size During Pregnancy Table of Content

How Will Your Breast Size During Pregnancy?

Related: Breastfeeding Bra Size Chart – find your nursing bra size

During pregnancy, your hormone levels will rise rapidly. This increase in hormones is what causes the changes in breast size.

Your breasts may become larger and heavier, and your areolas (the dark area around the nipple) may enlarge and darken. You may also notice that your nipples become more sensitive.

All of these changes are normal and are your body’s way of preparing for nursing. The amount of milk your breasts can produce during the gestational period will increase.

Your breast size may also fluctuate due to weight gain during pregnancy. On average, women gain 25-35 pounds during pregnancy. This weight gain can cause an increase in breast size.

Brest volume increase chart during pregnancy

Take a look at the table below to see how much breast volume usually increases during pregnancy:

Breast Volume During Pregnancy
Gestational AgeBreast Volume in mLBreast Volume in oz.
7 weeks293 mL9.91
19 weeks381 mL12.88
31 weeks398 mL13.46

Breast Size During Pregnancy
Image Source:

How To Choose The Type Of Bra Which Is Best During Pregnancy?

Related: Breast Size Chart for All Shapes, How to Measure Your Body for Clothing Sizes

If you find that your breast size has increased during pregnancy, don’t worry! You can do a few things to ensure you’re comfortable.

  • The first thing you should do is get fitted for a new bra. The average breast size growth during pregnancy is around 1-2 cup size. You may need to go up a cup size or two, so it’s important to get fitted by a professional.
  • You can also look for bras with adjustable straps. This will allow you to adjust the fit as your breasts change size.
  • Finally, make sure to buy a comfortable bra that provides support. During pregnancy, your breasts will be heavier and may be more sensitive.

You may want to consider investing in a good nursing bra. Nursing bras are designed to provide support and comfort while you’re nursing.

More related to Maternity Bras Fitting Guide (video)

Nursing Bra Measuring and Fitting Guide by Kindred Bravely

Do You Need To Have An Increased Breast Size During Pregnancy?

Related: Women’s Bra Size Chart

No, you don’t need an increased breast size during pregnancy. However, it is common for breasts to become larger and fuller during pregnancy.

A myth for some is that the bigger the breast size, the more milk you will be able to produce. This is not true! The size of your breasts does not affect how much milk you can produce.

So, if you’re unhappy with your new bra size, don’t worry! You can still nurse your baby successfully. However, you can do the following tips to help in increasing your breast size:

What To Eat To Increase Breast Size During Pregnancy?

The food you eat during pregnancy can also affect your breast size.

There are a few key nutrients that are important for breast growth. These include:

  1. Folic acid
  2. Vitamin E
  3. Protein

You can get these nutrients from a variety of foods, including leafy greens, nuts, and seeds.

To increase breastmilk, eat foods that are high in prolactin. Prolactin is a hormone that helps with milk production.

Some foods that are high in prolactin include:

  • Oats
  • Barley
  • Brown rice

How To Control Breast Size During Pregnancy? 

Related: Bra size for breast implants – a full guide to getting your new bra size

The answer is easy. It is about what you eat and drink. You must eat a balanced diet and drink plenty of water throughout the day. If you don’t do this, your body will start producing more hormones responsible for increasing your breast size. This will make your breasts bigger than normal. So, you have to avoid these foods that increase breast size.

1. Sugar

Sugar is one of the most common foods that can cause breast enlargement during pregnancy. When you consume sugar, it turns into fat. This fat is stored in your body. And, when you are pregnant, your body needs extra fat to support the growing baby.

2. Alcohol

Alcohol can cause a decrease in the amount of milk produced by your body. Your body needs enough protein to make milk. When you consume alcohol, it reduces the amount of protein in your body. This makes it harder for your body to make milk.

3. Coffee

Coffee contains caffeine. Caffeine is a stimulant. It increases the amount of adrenaline in your body. This causes your body to produce more hormones that are responsible for increasing your breast size.

How To Exercise To Reduce Breast Size During Pregnancy?

If you find that your breasts are too large or too heavy during pregnancy, you can do a few exercises to help reduce their size.

One exercise you can do is the chest press. This will help to tone the muscles in your chest and may reduce breast size.

Another exercise you can try is an overhead dumbbell press. This exercise will also help to tone your chest muscles and may reduce breast size.

You can also try wearing a supportive sports bra when you exercise. This will help to reduce bouncing and provide support for your breasts.

Frequently Asked Questions

What Do Large Breasts Indicate?

Large breasts do not necessarily mean you have more breast milk. During pregnancy, large breasts are a good sign and indicate the hormonal changes in your body.

An increase in breast sizes during pregnancy is caused by the buildup of milk glands and fat deposits around your breasts.

Can Breast Size Go Up and Down During Pregnancy?

Breast size may increase during pregnancy, but this is normal.

In addition to your baby growing inside you, your breasts also grow during pregnancy. The size of your breasts may go up or down, depending on the amount of milk your body produces. You can also lose breast tissue during pregnancy.

When your baby grows, the amount of milk your body makes also changes. This means that your breasts may go up or down in size, depending on how much milk your body makes. When breastfeeding, you may notice your breasts are smaller than usual when you first give birth. However, after a few weeks, your breasts may grow larger again.


Pregnancy can cause many changes in your body, including your breast size. However, these changes are normal and there are ways to deal with them!

Do you have any tips on how to deal with increased breast size during pregnancy? Share them in the comments below!

Picture in this post is by Anna Deli on Unsplash

Related to Breast Size During Pregnancy