Maternity Bra Guide

Your body goes through amazing changes during pregnancy. Here's how to stay comfortable with the right support at every stage.

What to Expect

Most women experience 2-4 cup sizes of growth during pregnancy. Your band size may also increase as your ribcage expands to accommodate your growing baby.

The key is finding bras that adapt to your changing body without breaking the bank on sizes you'll only wear for a few months.

See what actually fits you

Tell us your size and we will match bras from our catalog to it, translated to each brand's own sizing.

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By Trimester

First Trimester (Weeks 1-12)

Body Changes

Breast tenderness and sensitivity, slight size increase (usually 1 cup size)

What You Need

Soft, wireless bras; stretchy fabrics; no underwire pressing on sensitive tissue

Tip: Don't buy too many - your size will keep changing!

Second Trimester (Weeks 13-26)

Body Changes

Significant growth (1-2 cup sizes common), ribcage expansion

What You Need

Supportive but adjustable bras; multiple hook positions; wide straps

Tip: This is when most growth happens. Good time to invest in quality maternity bras.

Third Trimester (Weeks 27-40)

Body Changes

Final growth phase, preparing for nursing

What You Need

Nursing-ready clips if breastfeeding; maximum support; breathable fabrics

Tip: Choose bras that can transition to nursing if you plan to breastfeed.

Maternity Bra Shopping Tips

1. Buy as you go. Don't stock up early - your size will change.
2. Look for adjustability. Multiple hooks, stretchy fabrics, and adjustable straps.
3. Consider nursing bras early. If you plan to breastfeed, buy nursing-ready in your 3rd trimester.
4. Prioritize comfort. Skip underwire if sensitive. Sleep bras are worth it!
5. Get fitted mid-pregnancy. Around 20-24 weeks is a good time for a proper fitting.

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Frequently Asked Questions

When should I start wearing a maternity bra?

Most women benefit from switching to a maternity bra in the first trimester, as soon as their regular bras start feeling uncomfortable. Breast tenderness and swelling often begin within the first few weeks of pregnancy. A soft, wireless maternity bra can provide immediate relief. There is no set week to make the switch -- let comfort be your guide.

Can I wear an underwire bra during pregnancy?

Most healthcare providers recommend avoiding underwire bras during pregnancy, especially as breasts grow and milk ducts develop. Underwire can press on developing breast tissue and potentially restrict milk duct formation. If you prefer the support of underwire, look for styles specifically designed for pregnancy with flexible wires and wider channels that sit away from breast tissue.

How many cup sizes will I go up during pregnancy?

Most women experience an increase of one to two cup sizes during pregnancy, though some may go up as many as three or four cups. The majority of growth happens during the second trimester and again right after birth when milk comes in. Band size may also increase by one or two sizes as the ribcage expands to accommodate the baby.

Should I buy nursing bras during pregnancy or wait until after birth?

It is smart to purchase one or two nursing bras during your third trimester, around weeks 36 to 38, when your size is closer to what it will be postpartum. However, your breasts will likely grow another cup size when your milk comes in during the first week after birth. Choose stretchy, flexible styles for your initial nursing bras and plan to reassess your size a few weeks after delivery.

What is the best fabric for maternity bras?

The best maternity bra fabrics are soft, breathable, and moisture-wicking. Cotton and bamboo blends are popular because they are gentle on sensitive skin and allow airflow. Many women also appreciate fabrics with a small percentage of spandex or elastane for stretch and recovery. Avoid synthetic materials that trap heat, as pregnancy already increases body temperature.