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Shopping for shapewear and intimates is usually an exercise in psychological warfare.
You enter the arena looking for a smooth silhouette, and you leave three hours later, sweat-drenched and defeated, wondering if you actually need to breathe to survive the wedding reception.
So when it came time for me to test the modern legend Leonisa, I braced myself for the usual battle.
As it turns out, while the rest of the internet has been fighting over the latest trend-of-the-month bodysuit, Leonisa has been masterclassing the entire category. Wearing their latest lineup didn’t just tuck and smooth; it felt like a structural upgrade designed by someone who actually possesses human anatomy. It’s rare that a collection of undergarments makes me feel both structurally secure and mildly invincible, but here we are.
LeonisaWhat is Leonisa?
If you think Leonisa is just another face in the modern shapewear crowd, your timeline is off by about seven decades. Founded in Colombia all the way back in 1956, this brand was pioneering intimates long before tech bros decided to optimize the sports bra. They literally manufactured the first-ever bra in Colombia, establishing a legacy of structural innovation that has spanned generations.
New York PostWhile they’ve recently captured the internet’s attention with viral TikTok hits like their PowerStay short, Leonisa’s longevity relies on serious textile science rather than fleeting algorithms. They develop proprietary fabric technologies like PowerSlim, SkinFuse, and AirFlex, which manage to do the heavy lifting of high-compression shaping without making you feel like a vacuum-sealed piece of poultry. It’s heritage meets high-tech, delivering multi-generational appeal that balances timeless reliability with modern, trend-driven style.
What we tested
InvisiPlunge Shaper Short
New York PostPros:
- Unmatched versatility for tricky (read: unforgiving) dresses
- Seamless edges that genuinely do not dig into thighs
Cons:
- Financial investment — but once you realize how much you save by not having to hire a professional pool cleaner, it truly pays for itself
Size: S | Color: Golden Beige
I have truly never seen a product quite like this, and frankly, I’m slightly annoyed I didn’t have it a decade ago. The InvisiPlunge is the Swiss Army knife of formal wear prep. It manages to combine moderate midsection shaping, a thigh-smoothing slip short, and an incredibly low-cut back and plunging front that accommodates the most daring necklines in your closet.
This is absolute wizardry. It stays completely invisible under clingy fabrics, and the plunging design means you don’t have to play “peek-a-boo” with your shapewear lines when wearing a low-cut dress. It is incredibly useful and fills a massive gap in the market.
Invisilift Shaper Shorts
New York PostPros:
- Completely invisible under the most translucent, unforgiving fabrics
- Breathable enough for warm weather (a must for linen season)
- Zero rolling at the waistband or digging at the thighs
Cons:
- Very faint seam at the midsection could be slightly visible in even more sheer or tight garments
Size: S | Color: Golden Beige
If you want to test the true mettle of a shapewear brand, you don’t throw it under a forgiving knit or a structured LBD. No, you subject it to the ultimate crucible: a pair of bright white, practically sheer, tight, vintage linen pants. Linen is notorious for highlighting every seam, shadow, and momentary lapse in posture.
Enter the Invisilift Shaper Shorts. I slipped these on underneath my favorite (but previously unwearable) linen trousers, braced for impact, and stepped into the sunlight. The result? Absolute sorcery.
These shorts managed to completely smooth out my silhouette and erase any hint of a pocket lining or underwear line, all without creating that dreaded “sausage casing” bulge where the fabric meets the thigh. Leonisa’s ultra-flat, laser-cut edges genuinely melt into the skin. Best of all, because they are engineered with lightweight, breathable tech, I didn’t feel like I was wearing a wetsuit in peak summer. They offered just the right amount of targeted tummy control and a subtle, natural butt-lift that made the vintage linen drape exactly the way the designer intended.
ShapeUp Memory Foam Push-Up Underwire Bustier Bra with Strappy Front
LeonisaPros:
- Incredible, customized lift
- Supportive longline structure
- Looks stunning as a peek-a-boo element
Cons:
- The multi-hook bustier back requires some flexibility to fasten if you live alone
Size: 34B | Color: Black
This is not your grandmother’s utilitarian bustier. The ShapeUp Bustier is an unapologetic celebration of form, function, and a little bit of drama. Featuring memory foam cups that mold beautifully to your shape, it gives an exceptional lift while the strappy front detail begs to be shown off under a slightly unbuttoned blazer or sheer top.
New York PostThe lift on this is spectacular without feeling rigid, thanks to the memory foam. The longline band offers a beautiful smoothing effect across the ribcage, and the strappy front adds a modern, edgy aesthetic that elevates it from basic underwear to a legitimate fashion statement.
Next Generation Antigravity Wireless Strapless Bra
LeonisaPros:
- Shockingly comfortable
- Absolutely no wire digging
- Genuinely stays up through an entire day of movement
Cons:
- Gives a slightly more natural look than an intense underwire push-up, if extreme cleavage is what you’re hunting for
Size: 32B | Color: Nude
“Wireless strapless bra” is a phrase that usually strikes terror into my heart, implying a day spent aggressively hoisting up my shirt every four minutes. Leonisa’s Antigravity bra defies both the laws of physics and my own cynical expectations. It manages to provide genuine lift and impeccable staying power without a single piece of poking underwire.
I don’t know what kind of sorcery is at play here, but this bra stays exactly where you put it. You know the pick-up-and-place method for setting yourself perfectly into a bra, especially a push-up? This one keeps. It molds comfortably to the chest and distributes support evenly around the band, offering a rounded, lifted shape that usually requires painful wiring to achieve.
3-Pack Invisible G-String Thong Panties
LeonisaPros:
- Completely undetectable under the tightest clothes
- Lightweight and highly breathable; zero digging at the hips
Cons:
- More effective for line-vanishing vs. extreme tucking and slimming
Size: M
The ultimate test of any intimates brand is the humble thong. It is incredibly easy to get wrong and life-changing to get right. Leonisa’s 3-pack of Invisible G-Strings is a masterclass in minimalism. They are laser-cut, ultra-lightweight, and completely flat.
These are the holy grail of no-show. I wore them under a pair of unforgiving silk trousers, stepped into the unforgiving light of a bathroom mirror, and saw absolutely nothing. They fit like a second skin and are so lightweight I genuinely forgot I was wearing them.
How we tested
To truly see if Leonisa could live up to its legendary reputation, I didn’t just wear these pieces around the house; I subjected them to the trickiest garments I have. Over the course of two weeks, every item was put through its paces against the most notorious wardrobe agitators in my closet.
We’re talking high-stakes, lining-free resortwear and a body-skimming pair of practically sheer, vintage linen pants worn out into the unforgiving noon sunlight. Each piece was evaluated on three non-negotiable pillars: staying power (no rolling, sliding or hoisting), structural comfort (the ability to sit, breathe and eat a full meal), and stealth factor (whether they remained entirely undetectable under clothes that dare to bare).
Why Trust Post Wanted by the New York Post
This article was written by Kendall Cornish, New York Post Commerce Editor & Reporter. Kendall, who moonlights as a private chef in the Hamptons for New York elites, lends her expertise to testing and recommending cooking products – for beginners and aspiring sous chefs alike. Simmering and seasoning her way through both jobs, Kendall dishes on everything from the best cookware for your kitchen to chef-approved gourmet meal kits to the full suite of Ninja appliances. Prior to joining the Post’s shopping team in 2023, Kendall previously held positions at Apartment Therapy and at Dotdash Meredith’s Travel + Leisure and Departures magazines.
English (US)