Maternity Clothing Sizes: The Ultimate Guide

Let’s be honest: shopping for clothes while pregnant feels daunting. You don’t want to pick something frumpy, but squeezing your growing bump into tight fabrics is a hard pass.

Here is the good news. Maternity sizing isn’t as complicated as it seems. In fact, it is likely easier than shopping for regular jeans. We will walk you through exactly how to find your fit so you can feel comfortable and confident for the next nine months.

Why the Right Fit Matters

We all know that ill-fitting clothes are annoying. But during pregnancy, the stakes are higher. Your body is doing incredible work, and the last thing you need is a waistband digging into your stomach or a shirt that restricts your movement.

Between weight gain and hormonal shifts, your body image might take a temporary hit ⁽¹⁾. Squeezing into pre-pregnancy clothes that no longer fit can make you feel sluggish or self-conscious.

Switching to properly fitted maternity wear isn’t just about aesthetics. It is about physical comfort and emotional well-being. When your clothes fit well, you walk taller and feel better.

How to Crack the Maternity Sizing Code

So, how do you find your perfect maternity clothing size? The golden rule is simple: **stick to your pre-pregnancy size** ⁽²⁾.

If you wore a medium before, buy a maternity medium. If you rocked a size 10 jean, start with a size 10 maternity jean. Designers create these garments with extra fabric and stretch in the belly and bust to accommodate your growth while fitting your shoulders and hips like normal.

However, sizing can vary by brand, just like regular clothes. Here is how to ensure you get it right:

• Check the fabric content: Look for blends with spandex or elastane. These materials offer the stretch you need to last through the third trimester.
• Measure your current body: If you aren’t sure, grab a tape measure. Measure the fullest part of your bust and your hips (under the bump). Compare these numbers to the brand’s size chart.
• Use the fitting room strategy: If shopping in person, grab your pre-pregnancy size, plus one size up and one size down. This helps you gauge how different cuts hang on your changing shape.

Pants are often the trickiest item. I was a size 8 before pregnancy, but my size 8 maternity jeans kept sliding down. I actually had to size down to get the right grip on my hips. Conversely, for maternity shirts and dresses, you usually have more wiggle room due to stretchy fabrics.

Signs It Is Time to Make the Switch

Every pregnancy is unique. Some women pop early, while others wear their regular jeans well into the second trimester. There is no deadline for buying maternity clothes.

You should start looking the moment your daily wardrobe becomes frustrating or uncomfortable. Here are the tell-tale signs it is time to shop:

• The button struggle: If you are using a hair tie to loop your button and buttonhole together, it is a temporary fix. But if you are doing this daily, it is time for maternity pants.
• The peek-a-boo belly: If the bottom of your tummy hangs out from under your shirt, you need the extra length maternity tops provide.
• Tight undergarments: Your rib cage expands during pregnancy. If your bra digs in, it is time for maternity or nursing bras to support breast health.
• Bloating and pressure: Even before you show, early bloating can make waistbands hurt. Don’t suffer through it; get leggings or pants with a soft, stretchy band.

Maternity Wardrobe Essentials

If you hate the idea of buying a whole new wardrobe for a few months, I hear you. The trick is to buy versatile pieces you can wear during pregnancy and postpartum.

Here are the items that give you the best bang for your buck:

• Maxi skirts and dresses: These are the MVPs of maternity wear. They are flowy, breathable, and accommodate any size bump. Plus, if you buy ones with nursing access, you can wear them long after the baby arrives.
• Flowy tunics: Look for tops with an empire waist (seam right under the bust). This silhouette accentuates your shape without clinging to the belly. Neutral colors like black, white, and grey mix and match easily.
• Maternity Leggings: You will practically live in these. Maternity leggings usually feature a high waist panel that covers the bump, providing gentle support and smoothing.
• Side-panel jeans or overalls: You have two choices for denim: over-the-bump panels or elastic side panels. I prefer side panels because they look like regular jeans and are much easier to wear during the postpartum transition.

FAQs

How are Maternity Clothes Different?

Maternity clothes feature strategic shirring (ruching) on the sides, longer hemlines in the front, and stretchy waistbands. They are designed to accommodate a growing belly and bust while fitting your shoulders and limbs normally.

Why is it Important to Wear Appropriate Clothes During Pregnancy?

Properly fitted clothes prevent restriction of blood flow and allow for comfortable movement. Tight waistbands can cause heartburn or indigestion, while supportive maternity wear can help alleviate back strain.

Should I Buy Maternity Clothes or Just Bigger Sizes?

While sizing up in regular clothes works for T-shirts, maternity clothes are generally better. Sizing up regular pants often results in a baggy crotch and loose legs, whereas maternity pants provide space specifically where you need it.

What is Considered Plus Size In Pregnancy?

Plus size usually refers to size 14 and up. Many major retailers now have dedicated plus-size maternity lines that offer the same trendy styles with cuts designed for curvier figures.

How Tight Should Maternity Pants Be?

They should feel secure but not restrictive. If the waistband leaves deep red marks or you feel like you can’t breathe deeply, they are too tight. If you are constantly pulling them up, try a smaller size or a different belly-panel style.

How Do I Measure for a Maternity Bra?

Measure your rib cage (under the bust) and the fullest part of your bust. Since your rib cage expands, you may need to go up a band size and a cup size. It is best to remeasure every few months as your body changes.