Spanx OnCore Open-Bust Panty Bodysuit

The Spanx OnCore Open-Bust Panty Bodysuit is a shaping garment designed for firm compression while leaving the bust open so you can wear your own bra. Its bonded panels target the stomach, waist and hips, and the product description recommends sizing up if between sizes.

At a glance

The maker describes the compression as its highest level and as a super-firm hug.
Bonded front panels are intended to shape the stomach, with edge-bonded sides for smoothing the waist and hips.
Open-bust construction leaves bra choice to the wearer.
Booty-enhancing pockets are intended to avoid flattening the curves.

Price

$90.87Save 53%

Reference price: ~~$194.95~~

Price checked: 13 Nov 2026

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Pros and cons

Pros

Open-bust styling lets you choose and wear a separate bra.
The garment combines front and side bonded panels with pockets intended to preserve a rounded shape.
The maker provides a specific gentle machine-wash and flat-dry care routine.

Cons

Level 3 compression is described as very firm, which may not suit shoppers seeking light shaping.

Technical specifications

9 specifications

Identity
Brand	SPANX

Construction and fit
Style	Open-Bust Panty Bodysuit
Compression level	Level 3
Fabric composition	75% Nylon and 25% Spandex/Elastane
Bust design	Open-bust design allows you to wear your own bra
Panels	Fully bonded front-panels
Side panels	Edge-bonded side panels
Sizing guidance	We recommend sizing up if in between sizes.
Care	Simply machine wash cold on a gentle cycle and lay flat to dry.

What to know before buying

The product description recommends sizing up when between sizes. Customer feedback is mixed on fit, with some reporting true-to-size fit and others finding it too small.

Who is it for?

A good fit for

Shoppers wanting firm shaping through the stomach, waist and hips.
People who prefer a bodysuit that leaves them free to wear their own bra.
Those looking for a one-piece shaping layer with pockets intended to preserve the rear shape.

Less suited to

Shoppers seeking light compression or a built-in bra.
Those who prefer a clear, consistent sizing outcome without consulting the sizing guidance.

Spanx OnCore Open-Bust Panty Bodysuit · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.1 / 5 · 609 ratings

5 stars59%59%
4 stars15%15%
3 stars12%12%
2 stars4%4%
1 star10%10%

Customer feedback highlights comfort, ease of putting the bodysuit on, support that stays in place and perceived shaping. These comments may matter to shoppers considering its firm-compression, bonded-panel design, but experiences are not uniform: sizing, functionality and value receive mixed reactions, including reports of a too-small fit and of the garment feeling ineffective or overpriced. The overall ratings lean positive, while the distribution also includes a notable one-star share, so they do not guarantee a particular fit or shaping result.

Positive themes

Customers report good quality, comfort and ease of putting it on.
Some customers describe strong support that stays in place and appreciate its shape control.

Mixed feedback

Fit and sizing opinions differ, with some finding it true to size and others saying it runs too small.
Opinions on value and functionality are divided, including reports that it is worth the money and that it is overpriced or ineffective.