Best Adjustable Maternity One-Piece Swimsuits of 2025

Mary Hopper Avatar
Mary Hopper
Last Updated: Jan 2, 2025

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Adjustable maternity one-piece swimsuits are the perfect solution for expectant mothers who want to enjoy a day at the beach or pool without feeling self-conscious about their changing bodies. These swimsuits are designed to provide maximum comfort and support, with adjustable straps, soft and stretchy fabric, and a flattering fit that hugs the curves in all the right places. They come in a variety of colors and styles, from classic black to trendy prints and patterns, so every mom-to-be can find a swimsuit that suits her style. With an adjustable maternity one-piece swimsuit, expectant mothers can feel confident and comfortable while enjoying some fun in the sun.

At a Glance: Our Top Picks

American Trends Maternity One-Piece Swimsuit Cover #TOP 1
American Trends Maternity One-Piece Swimsuit
ftb score rating icon 9.8
Zando Black Maternity One-Piece Swimsuit Cover #TOP 2
Zando Black Maternity One-Piece Swimsuit
ftb score rating icon 9.7
American Trends Maternity One-Piece Swimsuit Cover #TOP 3
American Trends Maternity One-Piece Swimsuit
ftb score rating icon 9.5

Top 10 Adjustable Maternity One-Piece Swimsuits

American Trends Maternity One-Piece Swimsuit

Black
Large
American Trends Maternity One-Piece Swimsuit Cover
Maternity Swimsuit One Piece Maternity Bathing Suit Round Neck Adjustable Shoulder Strap Pregnancy Swimwear Black Large

The American Trends Maternity Swimsuit is designed with comfort and convenience in mind. Made from a blend of 82% polyamide and 18% elastane, this fabric offers excellent stretch, gently accommodating your growing belly without causing discomfort. The classic one-piece design ensures ease of wear, allowing you to slip it on and off effortlessly, which is especially helpful during pregnancy. Additionally, the adjustable shoulder straps let you customize the fit, ensuring it stays secure while you enjoy your time by the pool or beach. Perfect for various occasions, this swimsuit is a stylish choice for expectant mothers.

What We Like
Comfortable stretchy fabric
Easy on and off
Adjustable straps
Versatile for multiple occasions
#TOP 2

Zando Black Maternity One-Piece Swimsuit

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Black
Large
Zando Black Maternity One-Piece Swimsuit Cover
Zando Black Maternity Swimsuit One Piece Bathing Suit for Women Pregnancy Swim Suit High Elastic Women's Maternity Swimwear for Pregnancy Women with Adjustable Straps Large

The Zando Maternity Swimsuit is designed with your comfort in mind. Its ribbed fabric and U-neck backless style not only provide a flattering fit but also allow for easy adjustments with its straps. The ruched sides wrap around your belly, offering both security and room for your growing baby. Plus, the swimsuit features removable soft cup pads for gentle support, ensuring you feel comfortable without any binding. Whether you're at the beach, pool, or on vacation, this suit is a stylish choice for all your maternity swim needs.

What We Like
Comfortable ribbed fabric
Adjustable straps
Ruched sides for support
Removable soft cup pads
#TOP 3

American Trends Maternity One-Piece Swimsuit

Pink
Large
American Trends Maternity One-Piece Swimsuit Cover
Maternity Swimsuit One Piece Maternity Bathing Suit for Women Adjustable Spaghetti Straps Pregnancy Swimwear V Neck Front Cross Swim Suit Pink L

The American Trends Maternity Swimsuit is designed to provide comfort and support during pregnancy. It features a removable padded bra that enhances support and shape, ensuring you feel secure while enjoying your time in the water. The adjustable spaghetti straps allow you to find the perfect fit, making it easy to wear for long periods. The classic V-neck design not only looks stylish but also highlights your collarbone, giving you a flattering silhouette. Additionally, the pleated sides help shape your figure, allowing you to feel confident and beautiful throughout your pregnancy.

What We Like
Removable padded bra
Adjustable spaghetti straps
Flattering V-neck design
Pleated sides for shaping
#TOP 4

CUPSHE Maternity One Piece Swimsuit

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Green
Large
CUPSHE Maternity One Piece Swimsuit Cover
CUPSHE Women's Maternity One Piece Swimsuit Adjustable Strap Ruched Shell Stitched Back Cutout Bathing Suit for Pregnancy, L Green

The CUPSHE Maternity Swimsuit is designed to keep you stylish and comfortable during pregnancy. With adjustable straps, you can customize the fit to your liking, ensuring ease of wear. The shell-stitched ruched front adds a chic touch while providing support. The back features a unique cutout design with a hook closure, making it both fashionable and functional. You’ll appreciate the removable soft cups that offer extra comfort and versatility. This swimsuit is perfect for tropical vacations, beach days, or poolside lounging, making it a great addition to your maternity wardrobe.

What We Like
Adjustable straps for comfort
Chic ruched design
Unique cutout back
Removable soft cups
#TOP 5

CUPSHE Maternity One-Piece Swimsuit

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Black/Pink Floral
Large
CUPSHE Maternity One-Piece Swimsuit Cover
CUPSHE Maternity Swimsuit for Women One Piece Swimsuits Pregnancy Swimwear Spaghetti Straps Ruched Adjustable, L

The CUPSHE Maternity Swimsuit is designed with your comfort in mind. Its spaghetti straps and deep V-neck offer a stylish look while providing the support you need during pregnancy. The adjustable straps allow you to customize the fit, ensuring you feel secure and confident. Additionally, the ruched design helps accommodate your changing body, making this swimsuit a practical choice for expectant mothers. With removable padded cups, you can enjoy added comfort and versatility, perfect for your beach outings or pool days.

What We Like
Stylish spaghetti straps
Adjustable for perfect fit
Ruched design for comfort
Removable padded cups
#TOP 6

CUPSHE Maternity One Piece Swimsuit

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Black
Small
CUPSHE Maternity One Piece Swimsuit Cover
CUPSHE Women Swimsuit Maternity One Piece Bathing Suit Deep V Neck Ruffle Back Tie Ruching Adjustable Straps Swimwear Black S

The CUPSHE Maternity Swimsuit combines style and comfort for expecting mothers. Its ruffle and deep V neck design not only looks elegant but also provides a flattering silhouette. You’ll appreciate the adjustable straps, allowing you to customize the fit for maximum comfort throughout your pregnancy. With removable soft cups, you can choose the level of support you prefer, making this swimsuit versatile for various activities. Ideal for tropical vacations, beach days, or poolside lounging, this one-piece is a great addition to your maternity wardrobe.

What We Like
Stylish ruffle design
Adjustable straps for comfort
Removable soft cups
Perfect for beach vacations
#TOP 7

Charmo Ruffle Maternity Swimsuit

Small
Charmo Ruffle Maternity Swimsuit Cover
Charmo Women Ruffle Maternity One Piece Swimsuits Adjustable Shoulder Straps Pregnancy Swimwear Ruched Cutout Swimwear Red

The Charmo Maternity Swimsuit offers a stylish solution for expectant mothers. With its unique tied knot design at the front and back, you can easily adjust the fit for added support and comfort. The soft ribbed fabric on the outside, combined with the milk silk lining, ensures a gentle touch against your skin while providing the elasticity needed for your growing belly. The ruffle shoulder straps add a playful touch, and their adjustable nature allows you to customize the fit for maximum snugness. This one-piece swimsuit is designed with a cutout for ample belly space, making it both comfortable and fashionable.

What We Like
Adjustable fit for comfort
Soft, skin-friendly fabric
Playful ruffle design
Ample belly space
#TOP 8

Charmo Maternity One Piece Swimsuit

Green
Medium
Charmo Maternity One Piece Swimsuit Cover
Charmo Maternity Swimwear One Piece Scallop Trim Pregnancy Swimsuit Tie Back Bathing Suits with Adjustable Straps Green

The Charmo Maternity Swimsuit is designed for comfort and style during your pregnancy. Made from high-quality stretchy fabric, it feels soft against your skin and allows for breathability, making it perfect for warm days at the beach or pool. The swimsuit features removable padding and wire-free support, giving you the freedom to enjoy your time without discomfort. With a chic V-neck design and scalloped trim, you’ll look fashionable while feeling confident. Plus, the adjustable straps and ruched sides provide ample room for your growing baby belly, ensuring a perfect fit throughout your pregnancy.

What We Like
Soft, stretchy fabric
Removable padding for comfort
Chic design with scalloped trim
Adjustable straps for better fit
Roomy for growing belly
#TOP 9

CUPSHE Maternity One Piece Swimsuit

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Moss Green
Large
CUPSHE Maternity One Piece Swimsuit Cover
CUPSHE Women's One Piece Swimsuit Maternity Swimwear Adjustable Straps Ruched Lace V Neck, L Moss Green

The CUPSHE Maternity Swimsuit is designed to flatter expecting mothers with its beautiful lace v-neck and stylish ruched detailing. The adjustable wide straps ensure that you stay comfortable whether you're lounging by the pool or enjoying a day at the beach. With removable padded cups, you can customize your fit and support as needed. Plus, caring for this swimsuit is a breeze—simply wash it in cold water and avoid bleach or tumble drying. This versatile swimwear makes a perfect gift for special occasions, ideal for tropical vacations and summer getaways.

What We Like
Flattering lace v-neck design
Adjustable wide straps
Removable padded cups
Easy garment care
#TOP 10

Century Star Maternity Swimsuit Green XX-Large

Green
XX-Large
Century Star Maternity Swimsuit Green XX-Large Cover
Century Star Maternity Swimsuit for Women Maternity Bathing Suit V Neck One Piece Ruched Swimsuits Adjustable Shoulder Strap Swimwear Green XX-Large

The Century Star Maternity Swimsuit is designed with your comfort in mind. Made from a soft and stretchy fabric, it gently hugs your growing belly while providing excellent support. The adjustable shoulder straps allow you to find the perfect fit, ensuring you feel secure while enjoying water activities. Additionally, the swimsuit features a removable cup, giving you the option to customize your support and making it easier to clean. With its elastic design, this one-piece bathing suit adapts beautifully to your body throughout pregnancy.

What We Like
Comfortable fabric
Adjustable straps
Removable support cups
Elastic fit for growth
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What swimsuit is best for pregnancy?

Top Pregnancy Bathing Suits of 2022. Best Swimsuit on Amazon: Tempotrek V-Neck One-Piece.Best Full-Coverage Swimsuit: Bhome Maternity Off-the-Shoulder Tankini.Best One-Piece Swimsuit: Hatch Alghero One-Piece.Best Bikini: Cache Couer Bikini.Best Adjustable Bikini: Good American Always Fits Tiny Ties Bikini.

2. Can you wear a regular swimsuit while pregnant?

Bikini and Pregnancy Since your body is constantly changing while you are pregnant, string bikinis are your best options. The bottoms can be loosened and changed throughout all 9-months to ensure they fit you correctly. String tops can also be changed as your breasts grow in size in preparation for the baby.

3. Is a maternity bathing suit necessary?

An actual maternity bikini isn't necessary. It may make sense if you are carrying really low and are having a hard time finding a bikini that both fits under your belly nicely and has good bum coverage. Otherwise, look for a bikini with a supportive halter top and low rise bottoms.

4. How can I buy a swimsuit while pregnant?

A good pregnancy swimsuit shouldn't sag or feel too tight, but it also should be stretchy enough to grow with you. Most are made with a nylon-spandex blend.

Editor's Notes

During our adjustable maternity one-piece swimsuit research, we found 48 adjustable maternity one-piece swimsuit products and shortlisted 10 quality products. We collected and analyzed 6,186 customer reviews through our big data system to write the adjustable maternity one-piece swimsuits list. We found that most customers choose adjustable maternity one-piece swimsuits with an average price of $36.31.

The adjustable maternity one-piece swimsuits are available for purchase. We have researched hundreds of brands and picked the top brands of adjustable maternity one-piece swimsuits, including American Trends, Zando, CUPSHE, Charmo, Century Star. The seller of top 1 product has received honest feedback from 2,197 consumers with an average rating of 4.8.

Written by
Mary Hopper Avatar

Mary Hopper is an Italian fashion designer with 10 years of extensive working experience in the fashion industry. She can design clothing and fashion accessories, such as handbags, backpacks, shoes, and jewelry. She is also a professionally trained content writer specializing in managing various fashion and beauty blogs.