Calvin Klein’s Cult-Favorite Underwear Is On Sale For Prime Day

Emily Ruane
·7 mins read

Calvin Klein has been in the lingerie game for a long time; credited with inventing the boxer brief in the 1990s (and making it cool to pair visible underwear with denim). We’ve browsed and carted many a CK unmentionable without the benefit of the copious reviews that untested brands must cultivate to win over customers. And, yet! Head over to Amazon — the ancestral home of the five-star-review system — and you’ll discover that not only does Calvin Klein have glowing feedback in spades, but it's also up to 35% off for Prime Day.

Almost each and every bra and undie that boasts Calvin Klein’s recognizable logo has racked up reviews numbering in the thousands — touting the cult-favorite's comfort, sex-appeal, and high-quality characteristics that have made it legendary. Starting now and lasting through October 14, you can stock your underwear drawers to the top with legendary PD markdowns on the brand's top-rated styles. Click through to shop the selection of bestsellers worth adding to cart.

At Refinery29, we’re here to help you navigate this overwhelming world of stuff—and, while we do receive commission from Amazon, all of the goods linked to on our site are independently selected and supported by our Shopping team.

<h2>Modern Cotton Skinny Strap Bralette</h2><br><br>Reviewrs say: “I love these bralettes. I own this one in grey and black. I normally wear a 38C and the XL fits me well in this style. I work from home often so I have a lot of bralettes from different makers and most are lounge bras I would never leave my house in. I wouldn’t work out in this, but this one does give me enough support that I can wear it outside of my house running errands.<br><br><strong>4.4 out of 5 stars and 177 reviews</strong><br><br><strong>Calvin Klein</strong> Modern Cotton Skinny Strap Bralette, $, available at <a href="https://www.amazon.com/Calvin-Klein-Womens-Modern-Bralette/dp/B073WH4PHB?th=1&psc=1" rel="nofollow noopener" target="_blank" data-ylk="slk:Amazon" class="link rapid-noclick-resp">Amazon</a>

Modern Cotton Skinny Strap Bralette



Reviewrs say: “I love these bralettes. I own this one in grey and black. I normally wear a 38C and the XL fits me well in this style. I work from home often so I have a lot of bralettes from different makers and most are lounge bras I would never leave my house in. I wouldn’t work out in this, but this one does give me enough support that I can wear it outside of my house running errands.

4.4 out of 5 stars and 177 reviews

Calvin Klein Modern Cotton Skinny Strap Bralette, $, available at Amazon
<h2>Carousel Logo Cotton Bikini</h2><br><br><strong>4.6 out of 5 stars and 2,707 reviews</strong><br><br><strong>Calvin Klein</strong> Carousel Logo Cotton Bikini, $, available at <a href="https://amzn.to/3lkpmGR" rel="nofollow noopener" target="_blank" data-ylk="slk:Amazon" class="link rapid-noclick-resp">Amazon</a>

Carousel Logo Cotton Bikini



4.6 out of 5 stars and 2,707 reviews

Calvin Klein Carousel Logo Cotton Bikini, $, available at Amazon
<h2>Modern Cotton Bralette</h2><br><br>Reviewers say: “The second I tried this on it was Love! Love! Love! I’m a thick full figured woman who has been searching for a comfortable bralette. I’m very happy with this!! I’m 300 lb 5’11’ and a 46DD, and purchased the 3X. It fits perfectly and seems like it would be forgiving if I were a similar size. I have a long torso and wide set boobs so I HATE bra shopping. This is super soft and comfortable. Not much support but I wasn’t expecting that for these babies without underwire. Will make a great layer for those days when I’m lounging.”<br><br><strong>4.5 out of 5 stars and 7,232 reviews</strong><br><br><strong>Calvin Klein</strong> Modern Cotton Bralette, $, available at <a href="https://www.amazon.com/Calvin-Klein-Womens-Regular-Bralette/dp/B00GBCTM2S?th=1&psc=1" rel="nofollow noopener" target="_blank" data-ylk="slk:Amazon" class="link rapid-noclick-resp">Amazon</a>

Modern Cotton Bralette



Reviewers say: “The second I tried this on it was Love! Love! Love! I’m a thick full figured woman who has been searching for a comfortable bralette. I’m very happy with this!! I’m 300 lb 5’11’ and a 46DD, and purchased the 3X. It fits perfectly and seems like it would be forgiving if I were a similar size. I have a long torso and wide set boobs so I HATE bra shopping. This is super soft and comfortable. Not much support but I wasn’t expecting that for these babies without underwire. Will make a great layer for those days when I’m lounging.”

4.5 out of 5 stars and 7,232 reviews

Calvin Klein Modern Cotton Bralette, $, available at Amazon
<h2>Carousel Logo Cotton Thong</h2><br><br>Reviewers say: “I. Love. These. Thongs. Anytime that I see them anywhere on sale I stock up in bulk because they are genuinely great for my proportions (big butt, small waist). You got a big butt? Great. You got a little butt? I’m not sure, but I’m sure they are great. The band doesn't fold or roll down, they are very smooth under clothing, and the band doesn't stretch out over time in the wash.”<br><br><strong>4.7 out of 5 stars and 4,166 reviews</strong><br><br><strong>Calvin Klein</strong> Carousel Logo Cotton Thong, $, available at <a href="https://www.amazon.com/Calvin-Klein-Womens-Carousel-Heather/dp/B0147JPV6C?th=1&psc=1" rel="nofollow noopener" target="_blank" data-ylk="slk:Amazon" class="link rapid-noclick-resp">Amazon</a>

Carousel Logo Cotton Thong



Reviewers say: “I. Love. These. Thongs. Anytime that I see them anywhere on sale I stock up in bulk because they are genuinely great for my proportions (big butt, small waist). You got a big butt? Great. You got a little butt? I’m not sure, but I’m sure they are great. The band doesn't fold or roll down, they are very smooth under clothing, and the band doesn't stretch out over time in the wash.”

4.7 out of 5 stars and 4,166 reviews

Calvin Klein Carousel Logo Cotton Thong, $, available at Amazon
<h2>Modern Cotton Lightly Lined Bralette</h2><br><br>Reviewers say: “I absolutely love these bras. I just received mine today and the fit is fabulous! I am 5’2 130 and have always had a big bust I ordered a XL and it fit like a glove. No uni-boob either.” <br><br><strong>4.2 out of 5 stars and 2,345 reviews</strong><br><br><strong>Calvin Klein</strong> Modern Cotton Lightly Lined Bralette, $, available at <a href="https://www.amazon.com/dp/B01DTRDRJG?th=1&psc=1" rel="nofollow noopener" target="_blank" data-ylk="slk:Amazon" class="link rapid-noclick-resp">Amazon</a>

Modern Cotton Lightly Lined Bralette



Reviewers say: “I absolutely love these bras. I just received mine today and the fit is fabulous! I am 5’2 130 and have always had a big bust I ordered a XL and it fit like a glove. No uni-boob either.”

4.2 out of 5 stars and 2,345 reviews

Calvin Klein Modern Cotton Lightly Lined Bralette, $, available at Amazon
<h2>Seamless Adjustable Skinny Strap Bralette</h2><br><br>Reviewers say: “I had been on the hunt for a bra for daily/casual wear and I am so glad that I decided to order this bra...I just ordered 4 more because it fits my needs so perfectly. I am small chested (34A/32B) athletically built and really do not need much support, and I definitely appreciate the removable padding. Might not have enough support if you are larger in the chest and need more support. The material is stretchy, conforming, and very comfortable for long wear and moving around during the day. It’s basically my way of getting away with wearing a sports bra to work!” <br><br><strong>4.6 out of 5 stars and 1,415 reviews</strong><br><br><strong>Calvin Klein</strong> Invisibles Comfort Seamless Adjustable Skinny Strap Bra, $, available at <a href="https://www.amazon.com/dp/B01DTRDRJG?th=1&psc=1" rel="nofollow noopener" target="_blank" data-ylk="slk:Amazon" class="link rapid-noclick-resp">Amazon</a>

Seamless Adjustable Skinny Strap Bralette



Reviewers say: “I had been on the hunt for a bra for daily/casual wear and I am so glad that I decided to order this bra...I just ordered 4 more because it fits my needs so perfectly. I am small chested (34A/32B) athletically built and really do not need much support, and I definitely appreciate the removable padding. Might not have enough support if you are larger in the chest and need more support. The material is stretchy, conforming, and very comfortable for long wear and moving around during the day. It’s basically my way of getting away with wearing a sports bra to work!”

4.6 out of 5 stars and 1,415 reviews

Calvin Klein Invisibles Comfort Seamless Adjustable Skinny Strap Bra, $, available at Amazon
<h2>Modern Cotton Bikini Panty</h2><br><br>Reviewers say: “Breathable, sexy, practical, perfect fit. Wish I had fifty of these in different colors. Something comfortable that looks like lingerie.”<br><br><strong>4.7 out of 5 stars and 1,474 reviews</strong><br><br><strong>Calvin Klein</strong> Modern Cotton Bikini Panty, $, available at <a href="https://www.amazon.com/Calvin-Klein-Womens-Regular-Modern/dp/B00GBD2NXC?th=1&psc=1" rel="nofollow noopener" target="_blank" data-ylk="slk:Amazon" class="link rapid-noclick-resp">Amazon</a>

Modern Cotton Bikini Panty



Reviewers say: “Breathable, sexy, practical, perfect fit. Wish I had fifty of these in different colors. Something comfortable that looks like lingerie.”

4.7 out of 5 stars and 1,474 reviews

Calvin Klein Modern Cotton Bikini Panty, $, available at Amazon
<h2>Seamless Scoop Neck Bralette</h2><br><br>Reviewers say: “I’m not sure what made me think I could find the perfect bralette for myself online when I couldn’t even find one in the actual stores where I had (unsuccessfully) been trying on one after another in fitting rooms. BUT! Find one I did, and I couldn’t be more happy. Silky, light, and comfortable I have found myself reaching over my underwires so often that this bralette has become my almost always go-to. I will be ordering more. For reference I am 120 lbs, bra size 34C and am retired. The size medium fit perfect.”<br><br><strong>4.4 out of 5 stars and 938 reviews</strong><br><br><strong>Calvin Klein</strong> Invisibles Comfort Seamless Scoop Neck Bralette, $, available at <a href="https://www.amazon.com/Calvin-Klein-Invisibles-Lightly-Bralette/dp/B07791X8FL?th=1&psc=1" rel="nofollow noopener" target="_blank" data-ylk="slk:Amazon" class="link rapid-noclick-resp">Amazon</a>

Seamless Scoop Neck Bralette



Reviewers say: “I’m not sure what made me think I could find the perfect bralette for myself online when I couldn’t even find one in the actual stores where I had (unsuccessfully) been trying on one after another in fitting rooms. BUT! Find one I did, and I couldn’t be more happy. Silky, light, and comfortable I have found myself reaching over my underwires so often that this bralette has become my almost always go-to. I will be ordering more. For reference I am 120 lbs, bra size 34C and am retired. The size medium fit perfect.”

4.4 out of 5 stars and 938 reviews

Calvin Klein Invisibles Comfort Seamless Scoop Neck Bralette, $, available at Amazon
<h2>Seamless Thong Panty</h2><br>Reviewers say: “Calvin Klein makes the highest quality and best fitting underwear I have ever worn. The colors are a bit bland so I only own black. These thongs are not low rise in the front which I prefer. Although the material is nylon, these are not silky or shiny. They feel like a tough synthetic cotton. I hate cotton underwear but I love these. They are thin and light. They are comfy for lounging and tough enough for exercise. I will definitely buy more.”<br><br><strong>4.4 out of 5 stars and 345 reviews</strong><br><br><strong>Calvin Klein</strong> Seamless Thong Panty, $, available at <a href="https://www.amazon.com/Calvin-Klein-Womens-Seamless-Medium/dp/B00WSYWQ1M?th=1&psc=1" rel="nofollow noopener" target="_blank" data-ylk="slk:Amazon" class="link rapid-noclick-resp">Amazon</a>

Seamless Thong Panty


Reviewers say: “Calvin Klein makes the highest quality and best fitting underwear I have ever worn. The colors are a bit bland so I only own black. These thongs are not low rise in the front which I prefer. Although the material is nylon, these are not silky or shiny. They feel like a tough synthetic cotton. I hate cotton underwear but I love these. They are thin and light. They are comfy for lounging and tough enough for exercise. I will definitely buy more.”

4.4 out of 5 stars and 345 reviews

Calvin Klein Seamless Thong Panty, $, available at Amazon
<h2>Memory Touch T-Shirt Bra</h2><br>Reviewers say: “This bra is amazing! I've been buying bras from VS for years, but lately have been disappointed by the quality and fit of their bras. I purchased the racer-back version of this bra last year and decided to try this one. So glad I did. It fits like it was custom made for me, no pinching, very comfortable and it stays in place, especially when you’re reaching for something (unlike other bras that you have to adjust afterward). Doesn't show up under thin t-shirts or tanks.” <br><br><strong>4.3 out of 5 stars and 2,556 reviews</strong><br><br><strong>Calvin Klein</strong> Memory Touch T-Shirt Bra, $, available at <a href="https://www.amazon.com/Calvin-Klein-Perfectly-Lightly-T-Shirt/dp/B00JR4ODQM?th=1&psc=1" rel="nofollow noopener" target="_blank" data-ylk="slk:Amazon" class="link rapid-noclick-resp">Amazon</a>

Memory Touch T-Shirt Bra


Reviewers say: “This bra is amazing! I've been buying bras from VS for years, but lately have been disappointed by the quality and fit of their bras. I purchased the racer-back version of this bra last year and decided to try this one. So glad I did. It fits like it was custom made for me, no pinching, very comfortable and it stays in place, especially when you’re reaching for something (unlike other bras that you have to adjust afterward). Doesn't show up under thin t-shirts or tanks.”

4.3 out of 5 stars and 2,556 reviews

Calvin Klein Memory Touch T-Shirt Bra, $, available at Amazon
<h2>Seamless Hipster (Pack of Three)</h2><br><br><strong>Calvin Klein</strong> Invisibles Hipster Multipack, $, available at <a href="https://amzn.to/3d9qr1x" rel="nofollow noopener" target="_blank" data-ylk="slk:Amazon" class="link rapid-noclick-resp">Amazon</a>

Seamless Hipster (Pack of Three)



Calvin Klein Invisibles Hipster Multipack, $, available at Amazon
<h2>Seamless Longline V Neck Bralette</h2><br>Reviewers say: “Can I give it a 10? For home, sitting on the sideline of the soccer field, or grocery shopping... get the frickin’ bra. It’s amazing. All my friends have them now. Think of it as a fancy sports bra. Worth every penny.”<br><br><strong>4.3 out of 5 stars and 1,456 reviews<br></strong><br><br><strong>Calvin Klein</strong> Seamless Lightly Lined V Neck Bralette, $, available at <a href="https://www.amazon.com/Calvin-Klein-Invisibles-Lightly-Bralette/dp/B07791JWW9?th=1&psc=1" rel="nofollow noopener" target="_blank" data-ylk="slk:Amazon" class="link rapid-noclick-resp">Amazon</a>

Seamless Longline V Neck Bralette


Reviewers say: “Can I give it a 10? For home, sitting on the sideline of the soccer field, or grocery shopping... get the frickin’ bra. It’s amazing. All my friends have them now. Think of it as a fancy sports bra. Worth every penny.”

4.3 out of 5 stars and 1,456 reviews


Calvin Klein Seamless Lightly Lined V Neck Bralette, $, available at Amazon
<h2>Seamless Bikini (Pack of 5)</h2><br><br><strong>Calvin Klein</strong> Seamless Bikini (Pack of 5), $, available at <a href="https://amzn.to/3d90Tl8" rel="nofollow noopener" target="_blank" data-ylk="slk:Amazon" class="link rapid-noclick-resp">Amazon</a>

Seamless Bikini (Pack of 5)



Calvin Klein Seamless Bikini (Pack of 5), $, available at Amazon
<h2>Wirefree Contour Bra</h2><br>Reviewers say: “The padding is minimal and doesn’t add anything to your cup size, yet still gives a nice shape and thick enough to keep you discreet. Not sure if it’s considered seamless, but under tight shirts no bra lines can be seen — plus it provides great support and surprisingly gives good cleavage. Not sure what else you need in a bra!<br><br><strong>4 out of 5 stars and 1,190 reviews</strong><br><br><strong>Calvin Klein</strong> Wirefree Contour Bra, $, available at <a href="https://www.amazon.com/Calvin-Klein-Perfectly-Wire-Free-Sanddune/dp/B000P9GASC?th=1&psc=1" rel="nofollow noopener" target="_blank" data-ylk="slk:Amazon" class="link rapid-noclick-resp">Amazon</a>

Wirefree Contour Bra


Reviewers say: “The padding is minimal and doesn’t add anything to your cup size, yet still gives a nice shape and thick enough to keep you discreet. Not sure if it’s considered seamless, but under tight shirts no bra lines can be seen — plus it provides great support and surprisingly gives good cleavage. Not sure what else you need in a bra!

4 out of 5 stars and 1,190 reviews

Calvin Klein Wirefree Contour Bra, $, available at Amazon
<h2>Pure Seamless Bikini</h2><br>Reviewers say: “Good quality as always. Calvin Klein underwear costs a little more but they last longer and are more comfortable to me. These fit more snug than the modern cotton or radiant cotton bikinis I’ve worn before.” <br><br><strong>4.4 out of 5 stars and 533 reviews<br></strong><br><br><strong>Calvin Klein</strong> Pure Seamless Bikini, $, available at <a href="https://www.amazon.com/Calvin-Klein-Seamless-Bikini-Panty/dp/B00WSYZRMM?th=1&psc=1" rel="nofollow noopener" target="_blank" data-ylk="slk:Amazon" class="link rapid-noclick-resp">Amazon</a>

Pure Seamless Bikini


Reviewers say: “Good quality as always. Calvin Klein underwear costs a little more but they last longer and are more comfortable to me. These fit more snug than the modern cotton or radiant cotton bikinis I’ve worn before.”

4.4 out of 5 stars and 533 reviews


Calvin Klein Pure Seamless Bikini, $, available at Amazon

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