Thirdlove Vs. SKIMS — Which Strapless Bra Actually Stays Up?
Strapless bras promise support without the straps, but too often they dig in, slide down, or offer zero lift. When your outfit calls for invisible coverage, the last thing you need is a bra that can’t keep up.
If you’ve given up on them thanks to the constant slipping, digging, or sliding down halfway through the night — then you’re in luck.
Two major powerhouses — Thirdlove and SKIMS — are bringing smart strapless solutions to the table.
The question is: which one truly delivers on the promise of a strapless bra you’ll actually want to wear? We tested them to find out. Read our full review below or skip to our final thoughts.
Key Similarities
- All-Day Wearability:
Thirdlove’s Always Up Strapless and SKIMS’ strapless styles are both designed for extended wear. No digging, no slipping — at least in theory. - Invisible Under Clothes:
Both brands deliver a clean, smooth silhouette under everything from tanks to strapless dresses. - Modern, Minimalist Looks:
No itchy lace or outdated details here. Just clean lines, smooth fabrics, and everyday shades like Taupe, Black, and Nude.
Key Differences
- Support & Grip:
Thirdlove’s Always Up Strapless is engineered with innovative anti-slip grip technology — a serious game-changer. SKIMS sticks to old-school structure and elastic, which can start to lose support as the day goes on. - Sizing Range:
Thirdlove stands out with a more inclusive sizing range, offering 12 cup sizes from AA to I — including their signature half-cup sizes for a more precise fit. Each bra is rigorously wear-tested on thousands of real women to ensure a consistent, tailored fit across sizes. In comparison, SKIMS’ strapless styles come in sizes XXS to 4X, but with just 8 cup sizes total, the cup-to-band ratio feels less customizable — especially for those who fall between standard sizes. - Comfort Level:
Thirdlove prioritizes all-day comfort with thoughtful features like a hidden, flexible underwire that offers support without digging in, plus a tagless design that eliminates irritation. While SKIMS focuses on shaping and style, reviews are mixed when it comes to long-term wearability and comfort.
Thirdlove 24/7® Classic Always Up Strapless Bra Overview
Finally — a strapless that actually stays put.
ThirdLove’s Always Up Strapless Bra is designed to defy everything you thought you knew about strapless bras. It features breakthrough, patent-pending anti-slip grip technology that keeps the bra in place — no pinching, no suffocating.
The fit is flawless because every element is crafted for precision — from memory foam cups that gently mold to your shape, to a hidden, flexible underwire that offers support without digging in or relying on bulky silicone. Add Thirdlove’s signature half-cup sizes for in-between fits, and you’ve got a bra that feels like it was made just for you.
What we love most: the feel. Breathable, weightless, and invisibly smooth under clothes — it must be magic!
Available in Taupe and Black, the Always Up Strapless works for casual days or formal nights. No awkward adjusting in the restroom mirror. No slipping. No regrets. Just maximum comfort and a flattering shape you can count on.
Thirdlove has revolutionized the strapless bra — and honestly, you can feel the difference.
SKIMS Strapless Bra Overview
SKIMS has built a cult following for its sleek shapewear and minimalist basics — but does their strapless bra live up to the hype?
The SKIMS strapless design offers moderate support with smooth, stretchy material and an elastic underband designed to hold things in place. It looks good, but during our testing, it didn’t quite deliver the secure, locked-in feeling we need from a strapless — especially for us with larger boobs.
Fit can also be tricky. Without half-cups or tailored cup-band combinations, some wearers may find themselves in a “too loose here, too tight there” situation.
That said, SKIMS does win points in terms of aesthetics. Their strapless styles look clean and modern, and the fabric is super soft. But if comfort and reliability are your top priorities, this isn’t our first choice.
Final Thoughts
After comparing both brands’ strapless bras side-by-side, Thirdlove’s 24/7® Classic Always Up Strapless Bra comes out on top — by a long shot.
From the anti-slip technology to the inclusive sizing and cloud-like comfort, it checks every box. You’ll feel supported, look sleek, and — best of all— you won’t be constantly adjusting or pulling it up. Whether you’re giving a toast, twirling on the dance floor, or simply owning the room, you can move with total confidence, without discomfort or the fear of anything slipping out of place.
Thirdlove has truly redefined what a strapless bra can be: comfortable, supportive, flattering, and made to actually stay up.
If you’ve given up on strapless bras, Thirdlove’s sure to win you back. We’re in love.
