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Shopping for swimsuits can be a total struggle—between sizing guesswork and sky-high prices, it’s easy to feel overwhelmed. But thanks to the Amazon Big Spring Sale, scoring a cute, well-fitting swimsuit without draining your bank account has never been easier.
Right now, Amazon has a ton of stylish swimsuits under $40, including trendy two-piece sets that cost less than what some brands charge for just a top. From ruched one-pieces that flatter every curve to classic string bikinis and high-waisted sets that serve major hot girl summer vibes, there’s something for everyone.
Even better? These swimsuits are backed by thousands of glowing reviews and 5-star ratings, making it so much easier to nail the fit. If you’re ready to upgrade your swimwear lineup without breaking the bank, keep scrolling for the best Amazon Big Spring Sale swimsuit deals under $40.
Best Amazon Big Spring Sale Swimsuit Deals:
CUPSHE Ruffled One Piece Swimsuit
With over 25,500 five-star ratings, this one-piece swimsuit is a total fan favorite. Between the ruffle details, plunging neckline, ruched bodice, and lace-up back, shoppers cannot stop raving about how flattering it is—one even called it “the best one-piece I’ve ever worn.”
- Size Range: X-Small to XXL
Pink Queen Strapless Cheeky High Waist Bikini
This two-piece proves that simple can be stylish. With a bandeau top, removable straps, and high-waisted bottom, it has 13,000 five-star reviews, with one shopper saying, “I got so many compliments and was so comfortable, I forgot I was in a bikini.”
- Size Range: Small to 3XL
Eomenie Cutout One Piece Swimsuit
Get the best of both worlds with this best-selling one-piece. Featuring a midriff cutout, tummy control bodice, and full-coverage bottoms, it has adjustable criss-cross straps, self-tie details for the perfect fit, and fixed padded cups for shape—one reviewer even said, “This suit is amazing. The fabric is sturdy, great tummy control, and the girls fit like a glove.”
- Size Range: X-Small to 22 Plus
Suvimuga Triangle Bikini
You can’t go wrong with a classic string bikini like this one, offering full control over the fit of it. With a triangle top and low-rise cheeky bottoms, it’s a timeless style that one reviewer even called “timeless.”
- Size Range: X-Small to XXL
CUPSHE High Waisted Falbala Bikini Set
The high-waisted ruched bottoms and flowy top make this two-piece ideal for those seeking moderate coverage while still keeping it stylish. Adjustable straps ensure a perfect fit, and one reviewer said, “It’s very well made and super flattering! These high-waisted bottoms made me feel confident, especially with extra weight in my belly area.”
- Size Range: X-Small to XXL
Ekouaer High Neck Halter Bikini
This two-piece has major sporty vibes with its halter-style top for full coverage (and sun protection) and simple low-rise bottoms with medium coverage. Available in 30 colors and prints, one reviewer said, “I just bought this bikini and will be back for another—top provides full coverage for swimming and diving, plus it’s super flattering!”
- Size Range: X-Small to XXL
Aleumdr One Piece Swimsuit
This scoop-neck one-piece is a total classic, offering full coverage that’s perfect for swimming or lounging. The crisscross back adds a fun touch, and with tons of colors, prints, and extended sizes, one reviewer raved, “I bought this for water aerobics—it stays in place, fits well, and everyone in class wants one!”
- Size Range: Small to 20 Plus
Hilinker High Waisted 2 Piece Bathing Suit
With a V-neck top and adjustable straps, this bikini pairs perfectly with high-waisted, slightly cheeky bottoms for a flattering fit. Available in extended sizes and 50 colors and prints, one reviewer raved, “It really holds in your tummy and makes your boobs look great—I highly recommend!”
- Size Range: X-Small to XXL
CUPSHE Two Piece Bikini Set
This bikini is seriously cute, featuring a sweetheart neckline and adjustable crisscross straps that one reviewer said “has great support and is super comfortable and soft.” Paired with a cheeky low-cut bottom, it comes in tons of fun colors and patterns to match your vibe.
- Size Range: X-Small to XXL
Holipick One Shoulder One Piece Swimsuit
This one-shoulder one-piece is effortlessly classy with a ruched bodice, tummy control, and plenty of coverage. Available in extended sizes and tons of colors, one reviewer raved, “I want one in every color! It stays in place, sucks you in where it matters, and never needs adjusting.”
- Size Range: XX-Small to 22 Plus
SOLY HUX Spaghetti Strap Floral Print Bikini
This flirty two-piece features a triangle top with adjustable straps, a keyhole cutout, and a self-tie detail, paired with a cheeky bottom. Available in 18 colors and dreamy floral prints, one reviewer raved, “This bikini is so cute for the beach! It fits true to size and is made of good stretchy material!”
- Size Range: X-Small to XL
Blooming Jelly One Piece Swimsuit
With a ruched bodice, full-coverage bottoms, and ruffle details along the bust, this one-piece is equal parts stylish and flattering. Made from a stretchy, quick-drying material with adjustable straps, one reviewer said, “Fits true to size, comfortable with a little tummy control (but not so tight that it makes bulges), and good support on top.”
- Size Range: Small to XXL
Pink Queen High Waisted Cheeky Two Piece Swimsuit
This sporty-meets-sexy two-piece features an adjustable scoop-neck top and high-waisted bottoms with a cheeky ’90s cut. Available in 39 colors and prints, one reviewer gushed, “It’s so flattering and still shows my curves!!”
- Size Range: Small to XXL
CUPSHE One Piece Swimsuit
This one-piece strikes the perfect balance between flirty and functional with front and back cutouts plus a bandeau-style bust. The adjustable straps let you switch up the look, and one reviewer raved, “Fits as expected, and I love how I can cross the straps in the front or back for a different vibe!”
- Size Range: X-Small to XL
Want the very best Amazon Big Spring Sale deals? Then check out what a shopping editor is adding to their cart.
When is Amazon’s Big Spring Sale?
The second annual Amazon Big Spring Sale runs from March 25 to March 31, 2025. Shoppers can score big discounts on beauty products, spring fashion, electronics, home essentials, and more.
What is on sale during the Amazon Big Spring Sale?
Shop exclusive deals on seasonal items like spring fashion, outdoor furniture, cleaning and organization products, and Amazon devices. Plus, enjoy limited-time lightning deals and daily discounts throughout the sale.
How can I find the best deals during the Amazon Big Spring Sale?
Get a head start on savings with curated deals from E! Insider Shop throughout the event. New offers drop daily, and you can also browse top deals directly on Amazon’s homepage.
Do I have to be a Prime member to shop the Amazon Big Spring Sale?
No, anyone can shop the Amazon Big Spring Sale. However, Amazon Prime members get special access to exclusive deals and early-bird savings. If you’re not a Prime member yet, join today to start enjoying fast, free shipping and exclusive discounts during the sale and beyond.
How We Choose
The E! Insider Shop editors and writers search the internet to find the best products out there. We interview expert sources, comb through customer reviews, and use our own personal experiences to make shopping easier for our readers.
As an editorial team, we independently create content and determine coverage based on research, reporting and what we think our readers would like to read about. The goal of our content is to provide a service and inform readers who are on the hunt for the latest products to help make their life better. Items are sold by retailer, not E!. Pricing and availability are accurate as of publish time.
