Rated 5 out of 5 stars
Best Strapless Bra Ever!!!
This is the bra if you have a special event and cannot endure any problems! Put it on and then forget about it for the rest of the night
- Cup Size
- D
- Fit
- True to size
- Comfort
- Excellent
24/7® Classic Always Up Strapless Bra
$74
Rated 4.0 out of 5 stars from 198 reviews
24/7® Classic Always Up Strapless Bra
$74
Rated 4.0 out of 5 stars from 198 reviews
Band
32
Cup
C½
Product Details
Yes, there's a strapless bra that actually stays up. The 24/7 Classic Always Up Strapless Bra grips with no-slip silicone at both the top and bottom edges, so it holds its place while you move through a full day. You get the support and smooth shape you'd expect from straps, minus the straps.
No-Slip Silicone Grip: Lines both the top and bottom edges, so the band stays up instead of sliding down.
Wide Supportive Band: Spreads support across your ribcage for all-day comfort and a secure hold.
Flexible Underwire: Lifts and shapes without digging, even through long events.
Smoothing Memory Foam: Molds to you for a smooth line under fitted tops and dresses.
Convertible Straps: Removable straps let you wear it fully strapless, classic, or crossback.
Padded Tagless Hook-And-Eye Closure: Adjusts the fit and lies flat against your back without irritation.
Nylon/Spandex Blend: Stretches and recovers so the fit holds wear after wear.
This convertible strapless bra works under strapless dresses, off-shoulder tops, and wedding gowns, and it's just as easy to reach for on any everyday, strap-free day.
Size & Fit
- True to size
- Moderate coverage
- Wondering how to get the right size, especially for a larger bust? This strapless bra for a larger bust comes in bands 30–48 and cups AA–I, with half-cup sizes so you can land closer to your true fit. If you're between sizes or new to strapless, take the Find My Fit quiz or chat with a fit stylist.
Bra Size Calculator & Chart
Thirdlove offers over 60 bra sizes from 32 to 44 band and bra cup sizes from AA to H cup, including our exclusive half cup sizes. Using your current bra size as a starting point, you can refer to the bra cup size chart below to refine your fit.
How To Use The Bra Size Chart
When using the chart to find your bra size, keep in mind:
- The band size increases as you move from left to right. Move left or right within the row if your band doesn't fit.
- The cup size increases as you move from top to bottom on the chart. Move up or down the columns if your cups don't fit. In between cup sizes? Go up or down a half-cup! And keep in mind if you want styles that are full coverage or not!
- Bra sizes that share a row are sister sizes, meaning they share the same cup volume (though they have different cup letters). For example, at a glance they’re all just different bra sizes. However, the row with bra sizes 36C, 38B, and 40A have something in common: they all have the same cup volume but have different band sizes. The same goes for the row with bra sizes 38H, 40G, 42F, 44E, 46D, and 48C.
Measure snugly around your rib cage (underbust) and around the fullest part of your bust, in inches. Step 1 gives your band. For step 2, subtract your underbust from your bust and find the difference in your band's column. These are the sizes our Bra Size Calculator gives.
| Underbust (in) | Band size |
|---|---|
| 24.9 – 28.5 | 30 |
| 28.5 – 30.5 | 32 |
| 30.5 – 32.5 | 34 |
| 32.5 – 34.5 | 36 |
| 34.5 – 36.5 | 38 |
| 36.5 – 38.5 | 40 |
| 38.5 – 40.5 | 42 |
| 40.5 – 42.5 | 44 |
| Bust − underbust (in) | Band 30 | Band 32 | Band 34 | Band 36 | Band 38 | Band 40 | Band 42 | Band 44 |
|---|---|---|---|---|---|---|---|---|
| Up to 2.5 | 34AA | |||||||
| 2.5 – 3 | 30B* | 32A* | 34AA* | |||||
| 3 – 3.5 | 30C | 32B | 34A | |||||
| 3.5 – 4 | 30C½ | 32B½ | 34A½ | |||||
| 4 – 4.5 | 30D | 32C | 34B | 36A* | ||||
| 4.5 – 5 | 30D | 32C½ | 34B½ | 36A½ | ||||
| 5 – 5.5 | 30E | 32D | 34C | 36B | 38A* | |||
| 5.5 – 6 | 30E½ | 32D½ | 34C½ | 36B½ | 38A½ | |||
| 6 – 6.5 | 30F | 32E | 34D | 36C | 38B | |||
| 6.5 – 7 | 30F | 32E½ | 34D½ | 36C½ | 38B½ | |||
| 7 – 8 | 30G | 32F | 34E | 36D | 38C | 40B* | ||
| 8 – 9 | 32G | 34F | 36E | 38D | 40C | 42B* | ||
| 9 – 10 | 34G | 36F | 38E | 40D | 42C | 44B* | ||
| 10 – 11 | 34H | 36G | 38F | 40E | 42D | 44C | ||
| 11 – 12 | 36H | 38G | 40F | 42E | 44D | |||
| 12 – 13 | 38H | 40G | 42F | 44E |
* Also the result when the difference is exactly 2.5 in: 30B, 32A, 34AA; 4 in: 36A; 5 in: 38A; 7 in: 40B; 8 in: 42B; 9 in: 44B.
The calculator only gives a size for an underbust over 24.9 in, up to 42.5 in, with a difference of up to 13 in. Blank cells and measurements outside these ranges have no size in the calculator.
Fabric & Care
- 24/7® Classic (outer): 76% nylon/24% Spandex
- Anti-slip lining: 53% nylon/47% Spandex
- Hand wash in cold, lay flat to dry to dry to keep the grip and stretch intact.
- If machine washing, use a garment bag
Shipping & Returns
Perfect fit promise: Exchanges free for 60 days for all eligible orders. Please try on the bra to ensure a good fit, making sure to leave the original tags attached. We only accept underwear in unworn condition, with original tags, in its unopened original polybag. Items marked final sale are not eligible for return or exchange. If something’s not right, we can help. Our Fit Experts are available via live chat, or email to answer any questions you might have.
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FAQs
Is there a strapless bra that actually stays up?
Yes. The 24/7 Classic Always Up Strapless Bra grips with no-slip silicone at both the top and bottom edges, not just along the top like most strapless styles, so it holds instead of creeping down. Add a wide band and flexible underwire and you get real anchoring. If you've written off strapless, this is the one built to change your mind: Never. Falls. Down.
Does it come in larger cup sizes, and is it good for a fuller bust?
It is, and it does. You can shop bands 30–48 and cups AA–I, with half-cup sizes for the in-between fits that standard sizing usually misses. A fuller bust gets genuine lift from the flexible underwire and wide band, so the weight rests on your ribcage instead of dragging the band down. That combination is what makes strapless actually work at a larger cup.
How should a strapless bra fit, and should I size up?
Your band should sit firm and level across your back, since the band does nearly all the work when there are no straps to help. Don't size up in the band for strapless; a snug band is exactly what keeps it in place. If your usual cup gaps or spills, adjust within a cup size or try a half-cup, or take the Find My Fit quiz to confirm.
How do I keep a strapless bra from slipping down?
Start with a snug band that sits level around your ribcage, then make sure the silicone grip lies flat against your skin. Keep your skin clean and free of lotion or oil where the grip lands, since residue is the most common reason a strapless bra slides. If it still slips, your band is probably too loose. Chat with a fit stylist to dial it in.
How do I wash it and keep the silicone grip working?
Machine wash cold and lay flat to dry to protect the silicone, underwire, and memory foam, and skip the dryer, which breaks down grip and elastic over time. When the silicone edges stop feeling tacky, wipe them with a little mild soap and water, then let them air-dry fully. Clean grip is sticky grip, so that quick step keeps it holding.
Can I wear it with straps, or is it convertible?
Yes, it's convertible. It comes with removable straps, so you can wear it fully strapless, straight, or crossback depending on your neckline. Clip the straps on for extra security during long days or high-movement events, then take them off when your outfit calls for bare shoulders.
What occasions is this bra good for?
Reach for it under strapless and off-shoulder dresses, backless and plunging necklines, and wedding gowns where straps can't show. Because it's actually comfortable, it also holds up as an everyday strap-free option, not just a once-a-year event bra. The convertible straps mean one bra covers both.
What's your return policy if the fit isn't right?
Every order is backed by our Perfect Fit Promise, so you get free exchanges for 60 days if the fit isn't right. Wear it, wash it, and test the fit at home; if the band or cup isn't perfect, swap sizes at no cost. Not sure where to start? The Find My Fit quiz or a fit stylist can help you get it right the first time
