The menswear waistcoat worn as a top — no shirt, no cami — is a tailoring trick with two built-in exposure problems. The deep V of the button placket plunges to the sternum or lower, and the armholes were cut for wearing over a shirt, so they scoop low and wide, showing a slice of your side-bust from certain angles. A regular bra fails on both fronts at once: cups visible in the V, band and wing visible through the armhole. This outfit's undergarment plan is really an exposure-management plan.
The Short Answer
Wear The Original Sticky Boobs nipple covers ($25) and run fashion tape along the button placket to keep the V flat against your skin. If you want lift, Boob Tape ($18) lifts from the sides without putting anything in the deep V. On most vests, honestly, skip the sticky bra — the low armholes are where its cups get seen.
Covers + Placket Tape: The Working Formula
A buttoned vest holds decent contact against your bust, but every lean and twist makes the placket gape between buttons and swing the V's edges. Nipple covers mean the fabric's movement never matters — coverage is adhered to you, invisible even if the vest shifts. Then tape the placket: small pieces of double-sided fashion tape between the inner placket edge and your skin at the V's lowest button keep the neckline anchored, so the V stays a clean line instead of a peep show when you lean over a table. If your vest is snug and fully lined, the Non-Adhesive Nipple Covers ($25) hold fine under it; unlined or looser vests want the adhesive Originals.
Lift Without Center Hardware: Tape From the Sides
Want cleavage in that V? The sticky bra's front clasp sits low-center — precisely where a deep waistcoat V exposes skin — so this is a Boob Tape job. Strips start under each breast and pull up-and-outward toward the side of the chest wall, staying behind the vest's front panels and clear of both the V and the armhole line. Side-anchored tape also has a bonus here: it smooths the side-bust area that low armholes expose. Covers under the tape always; oil-assisted slow removal after.
The Honest Sticky Bra Caveat
On a high-buttoned vest with smaller armholes, the Sticky Bra ($35) can work — the front clasp needs to sit below the V's lowest visible point, which a 5-button vest with a shallow V allows. But on the fashionable deep-cut versions, the armholes are the dealbreaker: the outer edge of an adhesive cup sits exactly in the sightline when you raise your arm or turn side-on. Silicone cups visible through a menswear armhole read instantly as underwear malfunction. Check yours with arms raised in a mirror before trusting it; when in doubt, covers plus tape is the safer architecture.
Styling It, Step by Step
- Button the vest on bare skin and audit the exposure zones: how low does the V go, and how much side-bust do the armholes show with your arm raised?
- Apply covers to clean, dry, lotion-free skin — this outfit is skin-adjacent everywhere, so shade-match matters (Light, Tan, Dark).
- Adding lift? Place tape strips from the underbust up toward the sides now, before dressing, checking symmetry in the mirror.
- Button up, then place fashion tape at the placket: one piece at the lowest button's inner edge, one midway up the V.
- Do the lean-and-reach audit: lean forward as if signing a receipt, reach across your body, raise each arm. Watch the V and both armholes in the mirror through each move.
- Carry two spare pieces of fashion tape — placket tape is the piece of this setup that can quit mid-night as the vest's fabric flexes.
Honest Caveats
Very low-cut armholes on oversized vests can't be fully fixed by anything: raise your arm and someone will see side-bust with covers on it. Decide whether that's within your comfort level before you commit to the look, or size down to a more fitted vest where armholes sit closer. And skip body shimmer or oil on your torso — it kills every adhesive this outfit depends on, covers and fashion tape both.
FAQ
What do you wear under a waistcoat with nothing underneath?
Adhesive nipple covers plus fashion tape along the button placket. The covers handle exposure when the V gapes, and the tape keeps the neckline anchored to your skin.
Can you wear a sticky bra under a menswear vest?
Only if the vest buttons high with small armholes — deep-cut vests expose the cup's outer edge through the armhole when you raise your arm. For deep Vs and low armholes, use covers with side-anchored boob tape.
How do you keep a vest top from gaping between buttons?
Double-sided fashion tape between the inner placket and your skin at the gape points, usually the lowest button and mid-V. Re-tape if the fabric works loose during the night.
How do you hide side-boob in a vest with low armholes?
Side-anchored boob tape smooths and lifts the side-bust area behind the vest's front panel, but a genuinely oversized armhole will still show skin — a more fitted vest is the only complete fix.
Master the borrowed-from-the-boys look properly — The Original Sticky Boobs and a roll of Boob Tape are the whole toolkit.
