That familiar feeling — the water calls, but your pre-pregnancy bikini bottoms press into your belly, and those one-pieces feel like a test of willpower to squeeze into. Finding a swimsuit that actually accommodates a growing bump without looking like a shapeless sack is the real challenge of a pregnant summer.
I’m Mohammad — the founder and writer behind ProteinJug. I’ve spent years analyzing maternity apparel construction, testing fabric stretch percentages, and digging into the real-world durability of swimwear designed to carry you from the first trimester all the way to 40 weeks.
Whether you need a supportive tankini for swimming laps or a flattering one-piece for lounging poolside, this guide evaluates the top contenders to help you find the best swimwear for pregnancy that fits your body, your style, and your budget.
How To Choose The Best Swimwear For Pregnancy
Not all maternity swimsuits are created equal. The key is understanding how the suit’s construction interacts with your changing body shape. Fabric stretch, support features, and coverage all play a role in whether you’ll actually want to wear it.
Fabric Stretch and Recovery
The ideal maternity swimsuit fabric should have two to three times the stretch of standard swimwear. Look for high spandex content (18-25%) in a nylon-spandex or polyester-spandex blend. The recovery — how well the fabric snaps back after stretching — determines whether the suit stays supportive after multiple wears. Poor recovery means saggy bottoms and loose straps by mid-summer.
Support System Design
Growing breasts need reliable support. Built-in shelf bras with foam cups, adjustable straps, and wide underbust bands are non-negotiable for active wear. Racerback or adjustable cross-back designs distribute weight evenly and prevent strap slippage during swimming or playing with older children.
Coverage and Bump Accommodation
Ruching side panels, empire waist seams, and high-waisted bottoms allow a suit to flex with abdominal growth. A true maternity suit will have a designed belly panel or strategic gathering that provides room without bunching. Modesty preferences vary, but the right coverage prevents wardrobe malfunctions and boosts confidence at the pool.
Quick Comparison
On smaller screens, swipe sideways to see the full table.
| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| CUPSHE Maternity Swimsuit | One-Piece | All-day comfort with room to grow | Full belly coverage, adjustable straps | Amazon |
| Charmo Ruffle Ribbed Swim Dress | Swim Dress | Modest coverage with skirt | Padded inserts, adjustable straps | Amazon |
| Maacie Athletic Tankini | Tankini + Shorts | Active swimming and high coverage | Short bottoms, removable cups | Amazon |
| Eomenie One Piece Swimdress | Swimdress | Curvy body types, tummy control | Adjustable skirt, built-in bottom | Amazon |
| Charmo High Waisted Bikini | Two-Piece | Flattering bump-hugging bikini | Push-up top, boat neck | Amazon |
| DEBELLY Maternity Bikini Set | Two-Piece | Stretching with bump through entire pregnancy | Ruffle top, vintage design | Amazon |
| Charmo Ruffle Tie Knot Swimsuit | Two-Piece | Ribbed fabric, cutout style | Ruched tie-front top | Amazon |
In‑Depth Reviews
1. CUPSHE Maternity Swimsuit
The CUPSHE one-piece is the suit that keeps coming up in conversation among pregnant swimmers. Its full-coverage design uses stretchy fabric that reviewers consistently praise for supporting a growing belly without any tightness. The adjustable spaghetti straps stay put through laps, while the side ruching provides the extra fabric reservoir needed from the second trimester through delivery. Multiple women report buying a second color, which speaks to the fit reliability.
At 180-190 pounds and 35 weeks pregnant, wearers report the medium fits comfortably without tugging on the shoulders. The fully lined construction prevents transparency, and the coverage is modest enough for a public pool yet stylish enough for a beach vacation. The only caution from reviewers: if you prefer structured underwire support, this isn’t that suit.
Fabric recovery stays consistent after multiple wears and washes, a sign of quality in the nylon-spandex blend. The built-in shelf bra with removable cups offers adequate support for C-cup sizes. For the price point, this delivers premium-level stretch and durability that rivals more expensive brands.
Why it’s great
- Exceptional stretch and recovery
- Adjustable straps stay secure during swimming
- Fully lined, non-see-through fabric
Good to know
- No underwire support for larger busts
- Cut may be slightly cheekier than some expect
2. Charmo Ruffle Ribbed Maternity Swimsuit One Piece (Swim Dress)
The Charmo swim dress combines a ribbed, stretchy bodysuit base with a flowing skirt overlay that provides maximum coverage without feeling bulky. Reviewers at 26 weeks and 192 pounds report the XL fits perfectly with room to spare, and the adjustable straps with padded inserts offer genuine support. The ruffle detail at the bust adds a feminine touch while the ribbed texture provides visual interest that hides any lumpiness.
Multiple women note this suit earned compliments above any other maternity piece they owned. The thick fabric passes the transparency test, which is rare for a lighter-toned garment. The built-in bottoms and separate skirt layer eliminate the risk of riding up, a common frustration with swim dresses. One reviewer at 9 months pregnant and 228 pounds confirms the green XL fits well, though she added a few stitches for strap tightening.
Fabric durability is the main concern — the ribbed texture is prone to snagging on rough surfaces, so care with seating on concrete pool edges is recommended. The internal stretch layer follows the bump closely, while the outer skirt provides that extra coverage that makes the suit feel secure. For women who want style without compromising on belly room, this is a top contender.
Why it’s great
- Stretchy internal layer accommodates entire pregnancy
- Modest skirt overlay prevents riding up
- Padded inserts provide adequate bust support
Good to know
- Ribbed fabric can snag on rough surfaces
- Some may need to adjust strap stitching for a custom fit
3. Maacie Maternity Athletic Tankini Suit
The Maacie tankini is built for movement. The two-piece design features a high-neck tank top with a belly-ruching panel and matching shorts for full, non-slip coverage. A reviewer at 30 weeks, 230 pounds, with a 52-inch belly circumference confirms the XXL fits with stretch room. The removable cups and adjustable straps accommodate significant bust growth without digging in. The shorts provide the practical benefit of staying in place — no riding up, no wedgies.
Fabric thickness is notable here; it doesn’t go translucent when wet. The top offers substantial support for larger chests, and the back design is visually appealing while distributing tension. The belly panel on the top covers about halfway up the bump, which some women appreciate for the extra coverage it gives. One reviewer at 38DD in a medium confirms the support is robust without being restrictive.
The main drawback is the shorts — some women found the leg openings too tight, causing digging or rolling. For pear-shaped bodies with larger thighs, sizing up or choosing a different bottom option may be necessary. The top, however, consistently receives high marks for support and style. This suit is purpose-built for active swimmers or women who need reliable coverage for playing with older kids at the pool.
Why it’s great
- High-neck top offers strong bust support
- Shorts prevent riding up during active use
- Thick, stretchy, non-see-through fabric
Good to know
- Shorts leg openings can be tight for some body types
- Belly panel only covers halfway up the bump
4. Eomenie Women’s One Piece Swimdress
The Eomenie swimdress is designed with tummy control in mind, featuring a ruched front panel and an adjustable drawstring that lets you customize the fit. The built-in bottom stays in place, eliminating the need for separate bikini bottoms underneath the skirt. Reviewers consistently note the flattering shape on curvy figures, with the skirt hiding upper thighs and post-pregnancy belly. At 5’11” and 185 pounds, a medium fits slightly snug but flatters.
The fabric thickness is a standout feature — users describe it as durable and not see-through, with enough structure to hold its shape. The adjustable straps accommodate long torsos without riding up, a major advantage for taller women. The color options are vibrant and match product photos, which speaks to accurate product representation. Built-in shelf bra provides enough support for 36C without showing straps.
However, the tummy control claims are oversold. Shorter women at a higher weight reported the ruched panel fails to provide any slimming effect, instead creating a rounded belly silhouette. The drawstring helps, but the fabric’s natural drape doesn’t compress. This suit is best for women seeking a comfortable, modest shape with room for growth, not for those wanting significant core compression.
Why it’s great
- Built-in bottom and skirt stay in place
- Adjustable drawstring customizes fit
- Thick, high-quality fabric with vibrant colors
Good to know
- Minimal actual tummy compression effect
- Shorter bodies may find the skirt length overwhelming
5. Charmo High Waisted Maternity Bikini Set
The Charmo high-waisted bikini set proves you don’t need to sacrifice style for function. The V-neck top with push-up padding provides genuine lift and support, while the high-waisted bottoms cover the bump fully with stretchy, sturdy material. Reviewers consistently mention the flattering fit on a 29-week bump, with sizes running true to pre-pregnancy measurements. The boat-neck design prevents wardrobe malfunctions during active movement.
At 5’8″ and 190 pounds at seven months pregnant, a medium fits both top and bottom true to size. The fabric quality receives praise for not thinning out over the bump, a common failure point in cheaper maternity swimwear. The two-piece design allows for mixing and matching, extending the life of the suit postpartum — top and bottom can be paired with other pieces. The colors are reported to be vibrant and hold up to chlorine exposure.
The main consideration is sizing for larger busts — some reviewers found the top runs slightly small if you’ve gone up a full cup size. Sizing up one for top while keeping normal bottom size is a common workaround. The support is adequate for B to C cups but may not hold larger busts securely. For the price, the material quality and fit exceed expectations for a two-piece maternity swimsuit.
Why it’s great
- Flattering V-neck with push-up support
- High-waisted bottoms provide full bump coverage
- True to pre-pregnancy sizing
Good to know
- Top runs small for significant bust growth
- Durability unproven after multiple wears
6. DEBELLY Maternity Bikini Set
The DEBELLY set embraces a vintage aesthetic with ruffle details and high-waisted bottoms that hide the bump from certain angles. Reviewers report wearing this set through entire pregnancies up to 40 weeks, with the fabric stretching well without losing shape. The top is designed with a flattering sweetheart neckline that masks breast growth, and the bottoms provide coverage beyond the belly button. The ruched pattern on the bottom creates a visual illusion that streamlines the silhouette.
One reviewer at 23 weeks and 36C describes the fit as perfect without digging in or exposing skin. The material is substantial enough to avoid transparency, a crucial factor for lighter-colored suits. The set works well postpartum too — the high-waisted bottom flattens against the body once the bump is gone, allowing continued use. The vintage pattern is reported to make skin look tanner in photos.
The top fit is the main variable — women with larger chests (above D cup) found the top runs small, despite sizing up. The bottom consistently fits true to size, so mixing and matching different tops from the same brand may be necessary. The material is thicker than expected, which adds durability but can feel warm out of the water. Not ideal for active swimming due to the loose ruffle design.
Why it’s great
- Fabric stretches throughout entire pregnancy
- High-waisted bottoms cover fully without digging
- Ruffle design hides bump from front view
Good to know
- Top runs small for D-cup and above
- Not suitable for active swimming or laps
7. Charmo Ruffle Tie Knot Maternity Swimsuit
The Charmo tie knot two-piece offers a trendy cutout design with ruched side panels that allow the suit to expand with your bump. The ribbed fabric is stretchy and comfortable, with reviewers praising the feel against pregnancy-sensitive skin. At 5’0″ and a size 12/14, a large fits great with room to grow. The tie front allows for bust adjustment, accommodating changes in breast size. The ruffle detail adds a playful touch that distracts from any awkward areas.
One reviewer at 21 weeks, 141 pounds, and 5’5″ wearing a medium notes the bottoms cover the butt and boobs well without being overly modest. The material quality is consistent with other Charmo products — thick, non-see-through, and color-accurate. The knot detail can be adjusted to change the neckline, offering some versatility. The bottoms have enough stretch to accommodate a growing bump without sagging.
The main limitation is the cutout design — it provides a focal point that may not appeal to everyone. The tie knot can loosen during active use and may need retying. The bottoms, while comfortable, provide less coverage than high-waisted alternatives, which may not suit modest preferences. For women seeking a trendy, casual look for the beach or pool, this suit delivers style without sacrificing comfort.
Why it’s great
- Extremely stretchy ribbed fabric for bump growth
- Adjustable tie front accommodates bust changes
- Great value for trendy cutout design
Good to know
- Cutout design may not suit all preferences
- Tie knot can loosen during active swimming
FAQ
Can I wear my regular swimsuit during early pregnancy?
How do I know what size maternity swimsuit to buy?
Is it safe to swim while pregnant?
Final Thoughts: The Verdict
For most users, the swimwear for pregnancy winner is the CUPSHE Maternity Swimsuit because it combines exceptional fabric stretch with a ruched design that grows with your bump and retains its shape through multiple wears. If you want a modest swim dress with a separate skirt layer for maximum coverage, grab the Charmo Ruffle Ribbed Swim Dress. And for active swimming with no-slip shorts and strong bust support, nothing beats the Maacie Athletic Tankini.







