Spanx vs Skims: Which Shapewear Is Better?

For shapewear, Spanx is the better pick when I want firmer, targeted control, while SKIMS is the better choice for soft, versatile bodysuits. The spanx vs skims question has no universal winner: a thong bodysuit, a mid-thigh short and an open-bust layer ask different things of a garment. Good Housekeeping's side-by-side test found Spanx easier to move in for its thong bodysuit, named Spanx its mid-thigh-short winner and chose SKIMS for the open-bust bodysuit category. I take that as a useful split, not a law. Spanx describes five shaping levels, from light smoothing to its strongest compression, and recommends keeping your true size rather than sizing down for more control. SKIMS likewise directs shoppers to choose their usual size for maximum compression and size up for more comfort on strong-control pieces. Spanx frames its line around targeted compression, while SKIMS describes itself as a solutions-oriented brand across underwear, loungewear and shapewear. If your dress has a tricky neckline or a low back, start with the garment cut; if your priority is all-day smoothing, compare compression and closures. In these picks, the construction matters more than the logo.

Spanx's Suit Your Fancy Plunge Low-Back Mid-Thigh Bodysuit is the outfit-specific choice: a low back plus thigh coverage makes it useful under a clingy dress with a deep rear neckline. The Suit Your Fancy Strapless Brief Bodysuit keeps the strapless neckline but stops at a brief silhouette, which is easier under shorter hems. On SKIMS, the Unlined Plunge Thong Bodysuit uses an unlined plunge cup and adjustable back straps, while the Underwire Thong Bodysuit adds lightly lined cups and a hook-and-eye closure. SKIMS says both fit true to size; the unlined style notes that sizing down adds compression. That is not a universal size-down rule. For a fitted outfit, map the neckline and back first, then make sure the gusset, cup and strap setup will work through a full evening. If you are between sizes, follow the page guidance rather than chasing a smaller number. The low-back and strapless cuts solve specific wardrobe problems; if your outfit has neither, a simpler brief bodysuit may be the less fussy choice.

The mid-thigh shorts are the most direct comparison here. The GoFigure Mid-Thigh Short gives a straightforward smoothing layer, while the GoFigure High-Waisted Mid-Thigh Short adds a higher waist for more coverage through the middle. SKIMS's Core Sculpt High-Waisted Short is its strongest compression level, with an open gusset and a mid-thigh hem; the Seamless Sculpt Mid-Thigh Short focuses on the tummy, waist and thighs, with a silicone band intended to help prevent rolling. That makes the SKIMS shorts the more targeted choice when you want pronounced control, while the Spanx pair offers a simpler choice between a standard rise and a higher one. A practical fitting tip: pull the short on slowly and check that the leg opening sits flat before deciding the size. If the waistband folds or the thigh edge cuts in, change the size or silhouette instead of expecting the garment to settle later.

The remaining bodysuits cover different needs. Spanx’s GoFigure Open-Bust Bodysuit uses an open-bust design, 360-degree sculpting with LYCRA FitSense print technology, and OnCore Tech for targeted tummy control. The GoFigure Open-Bust Mid-Thigh Bodysuit also leaves room for your bra and adds thigh coverage. SKIMS’s Seamless Sculpt Brief Bodysuit gives a brief-length bottom, while the Core Sculpt Plunge Thong Bodysuit combines a plunging neckline with unlined cups and targeted core compression. For a long event, check where a garment closes and whether the bathroom break works with your outfit; straps, snaps and open-bust construction are practical details, not decoration. Both brands advise choosing size according to the support level you want instead of automatically ordering down. Spanx allows eligible returns within 30 days with a fee, while SKIMS also allows 30 days and waives its fee for store-credit returns. I would start with Spanx for a firmer, outfit-specific hold, and with SKIMS for a softer feel or a more fashion-forward neckline.