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13 Best Bras For Plunging Necklines In 2021

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By The Commerce Team

If you’re not interested in the visible bra trend, the best bras for plunging necklines have you covered. The 13 bras in this edit are all designed to remain invisible beneath low-cut tops and dresses, so the best one for you comes down to your preferred fit, level of support, coverage, padding (or lack thereof), and just how low your top is.

You’ll find a healthy selection of plunge bras on this list, either with V- or U-shaped silhouettes, that reach at or just below your sternum. Several come with convertible or multiway straps that can also accommodate low-back or racerback tops, and many super-plunge bras boast light padding and an underwire for support. Some offer a push-up effect, as well. Though if you don’t love the idea of a plunge bra proper, consider a T-shirt bra outfitted with smart design details, like a lower-than-usual cut or a transparent center gore — a comfortable choice for daily wear, or for those who prefer more coverage, support, and some lift.

An even easier choice? The lacy triangle bra. They’re inherently low-cut, comfortable, and so downright pretty — so if you don’t mind a bit of bra peeking out of your top, and you’re not looking for lots of support, these bralettes are great options. Or, opt for adhesive cups (lovingly referred to as cutlets) for the barest of bare styles, like plunging necklines and backless tops, especially if you don’t want or need a ton of support.

Scroll on to shop 13 of the best bras for plunging necklines, no matter how low you want to go.

1. This Convertible V-Bra With Light Padding

The plunging V-shape neckline on this lightly padded bra is ideal for the lowest of low-cut tops, but an underwire and side boning keeps it in place. Plus, the convertible straps can be worn over your shoulders, criss-crossed in back, or even as a halter neck, so it’s truly versatile. There are a few other bras for plunging necklines in different styles on this page (including self-adhesive bras, and bras with clear or no straps), so take a moment to browse and see which one you like best.

What reviewers say: “This bra is exactly what I was looking for! I ordered a dress with a very very deep V and the bra is perfect. [...] All in all I'm extremely happy with this purchase for such a low price. Definitely a staple to have in your wardrobe for party dresses!”

  • Available sizes: 30A — 40D
  • Available styles: 12

2. This Cult-Favorite Bra Adorned With Mesh & Feather Lace

A bra that's comfortable and allows you to wear a low cut top may seem hard to come by, but the Natori Feathers bra — a true cult-favorite — is exactly that. This underwire bra is equipped with plunging, lightly lined contour cups that aren't just functional — thanks to the brand’s signature feather-like lace design (that lies completely flush), they're also chic. The cups are also designed with semi-sheer paneling for a lightweight feel. You can pick up this elevated, everyday bra in 28 colors, including a range of neutrals, brights, and subdued shades.

What reviewers say: “I now own this bra in 3 colors; it's that amazing. This bra looks and feels incredible; you scarcely feel it at all when it's on. It's invisible under nearly all clothing, as the lace at the top lies flat; to me, this is very important, as I hate seeing the tops of bra cups poking through the fabric of your shirt! Not a problem here. I wear this bra daily with confidence, and I can't recommend it highly enough.”

  • Available sizes: 30A — 38DD
  • Available colors: 28

3. A Bra With Molded Plunge Cups That Showcase Cleavage

This seamless bra with molded cups adds extra security when you’re rocking a low-cut top, and also highlights your cleavage. The structured fit (complete with side boning and three clasps) offers great support for larger busts, while the padded straps are extra-comfortable.

What reviewers say: “This bra is amazing! Very good support, comfortable, and I don't feel like I'm going to fall out of it. I'm a 38ddd & it's hard to find a good plunge bra that does the job. Very happy w my purchase!”

  • Available sizes: 34B — 40DD
  • Available colors: 2

4. A Plunge Bra With Great Support & Clear Straps

Just because you're going low cut doesn't mean you have to sacrifice support. This super plunge bra from Maidenform gives you coverage in the places you may want, while making sure the bra remains hidden under the most revealing of tops. In addition to the bra itself, this order comes with straps that can be worn over your shoulders or as a halter; a converter that allows you to secure the straps lower down your back; and clear straps if you prefer an even more invisible effect.

What reviewers say: “ I was pleasantly surprised trying it on! The support level was completely acceptable and I didn’t “pop” out, so it definitely works for someone with a larger chest! Definitely beats buying a deep plunge bra with the adhesive sides lacking support, I love the straps!”

  • Available sizes: 2 — 15
  • Available colors: 2

5. This Unlined Plunge Bra With Gorgeous Embroidery

With its four-paneled cups and extra-low front, this Elomi bra offers full coverage, support, and separation, without the use of extra lining or an uncomfortable push-up silhouette. (A J-hook back offers the option to wear it as a racerback for even more support, too.) But it certainly doesn’t skimp on style, thanks to its glam mesh insets and beautiful, jewelry-like embroidery. You have plenty of colors to choose from in addition to the black pictured above, like lipstick red, royal purple, and “Unicorn,” which features contrasting, multi-colored pastel embroidery — all equally gorgeous.

What reviewers say: “I cannot say enough good things about this bra! [...] But this line carrys many sizes and this model was reasonably priced so I decided to go for it. Soooo glad I did! [...] IT FITS LIKE A DREAM! Also, it's actually cute and I dare say sexy! So often you find large bras are the style equivalent of granny panties. I think I've found my new bra brand. It doesnt dig into my shoulders (yes, really) or between my breasts.”

  • Available sizes: 32GG — 46DD
  • Available colors: 12

6. This Elegant Lace Bralette For Minimal Support

If you're interested in a bra that provides minimal support (but is still elegant), the Cosabella Trenta Bra is an excellent option. The elongated triangle cups come together to form a deep plunge neckline that’s perfect for your favorite low-cut top, while adjustable straps let you customize the fit. No need to worry about itchy lace — this is super-soft and stretchy, so you’ll practically forget it’s on. A sheer mesh lining also adds comfort and coverage. This comes in so many colors, from punchy brights to dreamy pastels.

What reviewers say: “This is not the most expensive bra I've ever purchased, but it *feels* as though it is. It's beautifully flattering, fits to perfection, and though it provides shape and support, I can forget I'm wearing within seconds of putting it on.”

  • Available sizes: Small — X-Large
  • Available colors: 25

7. Another Wireless Triangle Bra, With More Support

If you can’t get enough of your comfortable, pretty triangle bras, also consider this one from Wacoal. Like the Cosabella bralette, this is unlined, has a comfortable, wire-free band, and the unpadded cups are decorated in beautiful, soft lace. But this one has a hook-and-eye closure, rather than a pull-on style like most triangle bralettes, so it provides a bit more support. Plus, the convertible straps cinch together in the back so you can wear it in a racerback style.

What reviewers say: “I have only worn this bra once but I am in love! It is so comfortable! I love that it fits like a bralette but it has a hook-and-eye closure like a regular bra - making it much easier to get on and off. The band also provides more support than the typical bralette. I ordered my usual size and it was a bit tight at first. After about an hour of wear, the band fit comfortably. If you are in-between sizes then order up. Highly recommend! I've already ordered additional colors.”

  • Available sizes: 30 — 42
  • Available colors: 4

8. This Seamless U-Bra That Provides Lift

Here’s another bra that works to lift and shape your chest, all while remaining totally invisible beneath low-cut tops. Padded cups enhance your shape, though you can also insert silicone pads into the pockets for more. Convertible straps let you wear the bra as a halter, criss-cross, or conventionally. The whole construction is seamless, so it feels comfortable and stays nearly imperceptible, even under tight tops. Heads up: Some reviewers recommend securing the cups with double-stick tape.

What reviewers say: “Love it! This provides great support, enhances wonderfully, and is just perfect for low cut tops and dresses [...] I am going to order again!”

  • Available sizes: 34B — 38D
  • Available colors: 2

9. This Everyday Bra With A Clear Center Gore

If you're not into the idea of a specially made plunge bra, then a good choice for you could be this genius bra from Natori. It’s designed like a regular underwire bra (complete with ultra lightweight, lightly lined cups, adjustable straps, and sheer mesh sides), but the transparent silicone center gore allows you to wear low-cut tops without revealing more of your bra than you’d like. The straps are convertible, too, so you have more room to play around with skin-bearing tops.

What reviewers say: “Natori just makes a great bra. Very high quality and excellent fit. This bra is fantastic in terms of versatility as well - the convertible straps are great when I switch to wearing a racerback top [...] The light padding gives a smooth silhouette under tight fitting clothes.”

  • Available sizes: 30B — 36D
  • Available colors: 2

10. A Deep U Bra You Can Wear In *So* Many Ways

This bra is nothing short of brilliant. The U-shaped plunge is designed for super-low tops, and the convertible straps can be worn in myriad ways — including conventional, low, backless, halter, and criss-cross, to name a few. The push-up cups offer lots of lift and defined cleavage — so much so that one Amazon reviewer dubbed this their “holy grail pushup bra.” Note that this runs small, so you may want to go up a size or two.

What reviewers say: “oh. My. God. It's amazing ladies. It's like a gift from angels. It fits like they say it will and it's comfortable. Like the "I forgot I was wearing a bra" comfortable. [...] It's the best bra I've ever owned. In my entire bra wearing life. [...] this is the only bra I'm buying for the rest of my life. My chest looks fabulous, I feel fabulous and it's really well made.”

  • Available sizes: 32A — 42D
  • Available colors: 8

11. This Bustier-Style Plunge Bra That’s Surprisingly Comfortable

This longline, lace-accented bra harkens to classic bustiers, but the smooth cups and hook-and-eye closure (like a traditional bra) feel totally comfortable. Plus, the convertible straps are adjustable and customizable: Wear it criss-cross, wear it halter, or wear it regular. The microfiber cups are seamless and give you a natural look, while providing ample support.

What reviewers say: “I'm a size 36D and this fits me perfectly. I've been looking for something like this for a long time - a plunge bra with straps that can be adjusted or removed while still providing support. This bra does it all!”

  • Available sizes: 32C — 38D
  • Available colors: 2

12. A Strapless Adhesive Bra Made Of Cushy Silicone

A strapless adhesive bra is clutch if you like wearing plunging, strapless, or backless tops; and with close to 18,000 ratings, this one from Niidor is a fan-favorite on Amazon. This features two separate cups that clip in the middle, so you can place them however and wherever you want on your chest. Both are made of cushy silicone and lined with an ultra-sticky adhesive that doesn’t budge, but it peels off totally pain-free. One of our editors (with sensitive skin, no less) wore this comfortably to a wedding and it stayed on all day and night, even after a sweaty dance floor. This order comes with nipple covers, too.

What reviewers say: “These cutlets were the perfect answer to providing some 'moveable' cleavage to my sheer back wedding dress as an alternative to sewing padded cups directly into the dress. I used this for many tanks and dresses on the honeymoon over the past month, as an alternative to my uncomfortably banded strapless bras. I wash it with warm soapy water and air dry - and it retains its stick and shape. I'd replace this every summer if needed.”

  • Available sizes: A — F

13. A Front-Closure Sports Bra For Low-Cut Gym Tops

Stay comfortable during your next workout with this spandex bra, which provides enough support for low-to-medium impact activity. Just like your go-to sports bra, it’s wire-free and made with moisture-wicking technology, but the ultra-low plunge and front-clasp closure ensures that the bra stays invisible under low-cut tops. Molded, lightly padded cups provide lift, and enhance your cleavage.

What reviewers say: “I've been on the hunt for a supportive, wire-free bra that doesn't smoosh my shape and is comfortable in hot temps [...] The push up is really flattering, the cups are open so they don't dig into my tissue, and I honestly forgot I was wearing it and almost wore it to bed. It's that comfortable! I stood in a hot kitchen for 3 hours yesterday, sweating the whole time, and I never pulled at it or had to adjust it. I love this bra and I'm definitely ordering more.”

  • Available sizes: Medium — XX-Large
  • Available colors: 1