Maternity jeans: a comprehensive guide to choosing the right pair (waistband, size, fit)
If there is one essential item in a mother-to-be's wardrobe, it is maternity jeans. A staple of everyday wear, they must combine style, support, and above all, absolute comfort to accompany your body's changes over nine months.
However, navigating the different waistband systems and cuts can be complicated. At 23 Mai Paris, we support mothers from pregnancy through breastfeeding. In this article, we guide you in choosing the perfect maternity jeans for you.
Why invest in real maternity jeans?
Many women try to delay buying new clothes by using tricks such as elastic in the button of classic jeans or leaving the button undone. While this may work for the first few weeks, the need for clothing specifically designed for the pregnant woman's body shape quickly becomes a priority.
The risks of wearing traditional jeans during pregnancy:
- Compression points on the lower abdomen
- Digestive discomfort related to pressure
- Marks on stretched skin
- General discomfort that ruins everyday life
Abdominal comfort above all else
Maternity jeans feature stretch jersey panels or adjustment systems that allow the garment to stretch without ever feeling tight. This prevents digestive discomfort and respects the sensitivity of skin that stretches over the months.
High or low headband: how to choose?
This is THE crucial question when making a purchase. There are two main types of support for maternity pants.
The high headband (Over-the-bump)
This is the most popular model. A wide band of elastic fabric covers the entire belly.
Its advantages:
- Optimal abdominal support for a reassuring effect
- Gentle thermal protection in winter
- Smoothing the silhouette under tight-fitting tops
- The jeans don't slip down, even with a big belly.
Ideal for: the second and third trimesters, moms who like to feel supported, winter
The under-the-bump band
The jeans stop below the belly, supported by a discreet elastic waistband or side panels.
Its advantages:
- Perfect for those who can't stand having their stomach covered
- More pleasant in summer when it's hot
- Smoother transition to the postpartum period
- Feeling of freedom in the stomach area
Ideal for: the first trimester, summer, moms who tend to feel hot easily
Our advice: If you're unsure, start with a low-rise bandeau top in the first trimester, then invest in a high-rise bandeau top when your belly really starts to show.

The different cuts of maternity jeans
Beyond the waistband, the cut of the jeans also matters for your comfort and style.
Slim-fit maternity jeans
The most versatile cut. It hugs the legs without being tight and can be worn with sneakers or ankle boots.
Straight jeans
Classic and timeless, it suits all body types and offers more comfort around the calves.
Bootcut jeans
The slightly flared leg at the bottom balances the silhouette and elongates the legs. Perfect with low heels.
Mom jeans or boyfriend jeans
More spacious, it offers maximum comfort. Ideal for relaxing days or moms who prefer loose fits.
What size should you choose for your maternity jeans?
As a general rule, brands recommend choosing your usual size from before pregnancy. Designers already factor in natural weight gain around the hips and thighs.
A few adjustments depending on your situation:
- If you have gained more than 10-12 kg prematurely → choose one size larger
- If you are usually between sizes → choose the larger size
- If you are buying at the beginning of your pregnancy → your usual size will fit
Tip: Try sitting and walking in the jeans before buying them (or check the return policy if you're buying online).

When should you buy maternity jeans?
There is no universal rule, but here are a few guidelines:
- First trimester: Some mothers already experience discomfort in the first few weeks (bloating, sensitivity). Low-rise jeans can be helpful.
- Around 12-16 weeks: This is often when regular jeans start to feel really uncomfortable.
- Second trimester: Your belly is growing, so now is the perfect time to invest in a pair of high-waisted jeans.
Don't wait too long: you'll enjoy your jeans for several months, so it's worth the investment!
Pairing jeans with nursing clothes
Buying maternity jeans is often the first step toward building a sustainable maternity wardrobe. At 23 Mai Paris, we advocate for clothing that lasts and accompanies you from pregnancy to breastfeeding.
The jeans + Breastfeeding t-shirt
A timeless basic. The loose-fitting or fitted T-shirt worn over the waistband of your jeans creates a harmonious silhouette. And once your baby is born, you can breastfeed discreetly thanks to the openings.
The jeans + nursing sweatshirt combo
For a casual and practical look, pair your denim with a sweatshirt with invisible openings. The waistband of the jeans ensures that your stomach remains covered even when you lift the top slightly to breastfeed discreetly.
The jeans + Breastfeeding dress
Yes, it's possible! A short nursing dress over slim jeans creates a trendy and original look.

Care tips to make your jeans last longer
The elastic fabric used in maternity jeans (spandex) is sensitive to heat. To prevent your jeans from stretching out prematurely:
- Wash at 30°C maximum to preserve elasticity.
- Avoid using a dryer, as it damages the elastic fibers.
- Wash the garment inside out to protect the color of the denim.
- Do not iron the headband (jersey fabric does not require ironing).
- Let dry flat or on a hanger to prevent distortion.
Postpartum jeans: a transitional stage
Don't put away your maternity jeans as soon as you get home from the hospital! It takes time for your body to return to its original shape, and that's perfectly normal.
The comfort of the headband will be your best ally during the first few weeks of life with your baby, providing welcome softness to the abdominal area, especially after a C-section.
How long should you wear maternity jeans after giving birth?
There are no rules. Some moms wear it for a few weeks, others for several months. Listen to your body and don't put pressure on yourself to fit into your old jeans.

Conclusion
Maternity jeans are a smart investment for staying comfortable during your pregnancy without sacrificing your style. High-waisted or low-waisted, slim fit or mom fit, the key is to choose a style that suits you and makes you feel good.
At 23 Mai Paris, we support mothers with clothing designed for comfort and elegance, from pregnancy to breastfeeding. Because every stage of motherhood deserves clothing that lives up to the occasion.
If you are breastfeeding, here are some of our nursing clothes that may interest you:
Breastfeeding t-shirts
Breastfeeding sweaters
Breastfeeding tank tops
Breastfeeding dresses
Breastfeeding pyjamas





















