A bodysuit solves the problems a separate top and knickers create: the waistband that gaps, the top that rides up, the line that shows at the hip. It is one smooth layer from shoulder to hip, fastened with a gusset so it stays put. Choose by three things: the neckline and back your outfit needs, how much smoothing you want, and the leg shape underneath.
Here is how to choose a seamless bodysuit for tight dresses, workwear and low-cut styling, and which Heist styles suit each. The range runs from a smooth second-skin layer to graduated shaping, so match the piece to the job rather than buying one for everything.
What a bodysuit does under clothes
A seamless bodysuit smooths the torso in a single layer, so there is no waistband to print through a fitted skirt and no hem to ride up under tailoring. The back is as important as the front: a smooth back means no bra line under a close dress. A gusset with a snap fastening keeps it in place and makes the bathroom practical.
The same second-skin principle sits behind our seamless underwear, scaled up to a full piece. Where you want the leg smoothed too, a shorty length carries it past the thigh; where you only need the torso, a thong or brief back keeps it minimal.
Four bodysuits, four jobs
The Secondskin High Neck Bodysuit
Buttery-soft second-skin with a high neck and long sleeves, and a snap gusset. Smooth rather than compressive.
Good for: a clean line under tailoring, or worn as a top on its own. Black or Chocolate Torte.
The Dahlia Lace Bodysuit
A high-apex lace bodysuit made to be seen as much as worn underneath. Shell Pink.
Good for: lace on show, or a delicate layer under tailoring.
Contour Seamless Bodysuit
Graduated compression through the torso, 3D body-scanned and seamless. Shaping where the Secondskin smooths.
Good for: a held, sculpted line under a close dress.
The Sheer Bodysuit
A sheer statement piece made to be seen, not hidden. Black or Burgundy.
Good for: visible layering under tailoring or with a skirt in the evening.
Match the neckline and back to the outfit
Start with what the outfit shows. A high neck finishes a look on its own and sits cleanly under a blazer. A scoop or low back keeps the bodysuit hidden under an open-backed dress. Under a fine top, a smooth unpadded style reads as skin, so pair it with your own bra where you want shape; the Heist seamless bodysuits are smooth rather than padded.
Then choose the back and leg. A thong or brief back suits trousers and fitted skirts where you want the least coverage; a shorty length smooths the thigh under a slip dress. For the wider styling picture, our guide to how to style a bodysuit covers the outfits in more detail.
The lightest shaping: wear it under or over
If you want a little shaping rather than firm hold, the Invisible bodysuits are the gentlest step into shapewear: lower compression, smoothing rather than sculpting, and cut to work either as an invisible layer under clothes or as outerwear on its own. Choose the Invisible Brazilian Bodysuit for a brief-style back, or the Invisible Shorty Bodysuit to smooth the thigh too.
Both come in Black and Almond, so you can match the pair to your skin under a pale outfit or wear the black as a piece in its own right.
Smooth, shaping or sculpting: which you need
Bodysuits are not all the same strength, and the label matters. The Secondskin styles are smooth second-skin: they even the line without holding you in. The Invisible bodysuits step up to light smoothing, lower compression than the rest and cut to wear as underwear or as outerwear. Contour adds graduated compression, 3D body-scanned and knitted seamless, for a sculpted line under a close dress. Sculpt is firmer again, its panels bonded rather than stitched and perforated for breathability, made for occasion wear when you want the most hold. Most wardrobes want a smooth everyday piece and one shaping piece, not one garment trying to do both.
Whichever strength you choose, a gusset with a snap or popper fastening keeps the bathroom simple, and the Contour range is made in Italy on the same single-piece knit as our tights.
Heist bodysuits at a glance
| Bodysuit | Feel | Neckline / back | Best for | Colours |
|---|---|---|---|---|
| Secondskin High Neck | Smooth second-skin | High neck, long sleeve | Under tailoring, or as a top | Black, Chocolate Torte |
| Secondskin Scoop Back | Smooth second-skin | Low scoop back | Low-back dresses | Black, Chocolate Torte |
| The Invisible Brazilian Bodysuit | Light smoothing | Brazilian back | An invisible layer, under or over | Black, Almond |
| The Invisible Shorty Bodysuit | Light smoothing | Shorty leg | Thigh smoothing, under or over | Black, Almond |
| Contour Seamless Bodysuit | Graduated shaping | Scoop, thong back | A sculpted line under dresses | Black |
| Contour Shorty Bodysuit | Graduated shaping | Shorty leg | Thigh smoothing under slip dresses | Black, Almond |
| Sculpt Perforated Outer Bodysuit | Firm bonded sculpting | Scoop, thong back | Occasion wear, most hold | Black, Almond |
| The Sheer Bodysuit | Sheer statement | Scoop | Visible layering, evening | Black, Burgundy |
| The Nieve Bodysuit | Mesh statement | Scoop | A statement layer, evening | Black |
Colours and sizes shown are those live at the time of writing. Check each product page for current availability.
When the bodysuit is the point
Not every bodysuit hides. A mesh or lace style is made to be seen: under an open blazer, with tailored trousers, or with a skirt after dark. The Nieve Bodysuit in flocked mesh is the statement piece of the range, and it sits alongside our lace styles, the Bridget lace triangle and the Dahlia high-apex lace.
Keep the rule simple: if the bodysuit is doing the talking, let the rest of the outfit stay quiet. One statement layer per look is plenty.
Seamless bodysuits: your questions answered
Do Heist seamless bodysuits have integrated bra support?
The seamless bodysuits are smooth and unpadded rather than cupped, so they wear cleanly under fine fabric. Wear your own bra underneath where you want shape or lift, or go without where the outfit allows.
Scoop back or high neck: which should I choose?
Match it to the outfit. A high neck finishes a look on its own and sits under a blazer; a scoop or low back stays hidden under an open-backed dress. The Secondskin bodysuit comes in both.
Shorty bodysuit or mid-thigh shaping shorts?
A shorty bodysuit smooths torso and thigh in one layer with no waistband, which suits a slip dress. Separate shaping shorts give you thigh coverage without committing the top half, which is easier under trousers. If thigh rub is the main issue, see our guide to anti-chafing shorts.
How do I smooth back bulges under a tight dress?
Choose a bodysuit with graduated compression rather than a smooth everyday one. The Contour Seamless Bodysuit is 3D body-scanned and knitted seamless, so it holds the torso evenly with no seam to print through.
Can you wear a bodysuit under a silk dress?
Yes. A smooth, seamless bodysuit removes the waistband and knicker lines a silk dress would otherwise show. Choose a nude close to your skin tone under a pale silk, and check the line in daylight before you leave.
How do you style a mesh or lace bodysuit?
Treat it as the layer people see. A mesh or lace bodysuit works under an open blazer or with tailored trousers, and reads as a considered piece rather than underwear. Keep the rest of the outfit quiet so it stays the focus.
What is the best seamless bodysuit in the UK?
It depends on the job. For a smooth everyday layer, the Secondskin High Neck; for a sculpted line, the Contour Seamless Bodysuit; for a statement, The Nieve Bodysuit. Browse them all in the bodysuit collection.
Words by The Heist Team.
