
Warner's
No Side Effect Plunge Bra
This is a women's plunge bra from Warner's at Miiyu, made with soft stretch microfibre. It features lightly padded, moulded underwire cups, satiny front-adjustable straps, and a two-hook back closure. The bra provides moderate support and extra side coverage, with a smooth, seamless finish and a narrow center band with a small cutout.
Color
Size
Specifications
- Material
- Cup: 78% nylon, 22% spandex; Sides: 76% nylon, 24% spandex; Cup lining: 100% polyester; Elastic band: 88% nylon, 12% spandex; Other parts: 98% nylon, 2% spandex
- Gender
- female
- Age Group
- adult
- Condition
- new
Product Insights
The Warner's No Side Effect Plunge Bra delivers sports-bra-level secure hold and shape without discomfort, sleevage, gaping, or the pancake effect, thanks to side smoothing and moulded plunge cups that sit invisibly under low necklines. Front-adjustable padded satiny straps allow quick tension changes without removing the bra. However, to maintain its shape and resist pilling, the bra requires careful hand washing in cold water with no heat or chemicals, trading off convenience for longevity.
Verified claims
- Side smoothing
- Side smoothing eliminates sleevage and provides secure hold without discomfort.
- Shape
- Lifts and shapes without the pancake effect; sports-bra-level secure.
- Shaping
- Moulded plunge cups shape without gaping in low necklines.
- Strap adjustability
- Front-adjustable satiny straps allow quick tension adjustment without removing the bra.
- Secure hold
- Stays secure during sudden movement, almost sports bra-level.
- Straps
- Padded satiny front straps adjust without contorting or removing the bra.
- Plunge depth
- Sits lower than demi/full coverage, invisible under low necklines.
- Secure fit
- Front-adjustable straps deliver an almost sports bra-level secure fit.
- Fabric finish
- Deep true black with a matte finish that resists pilling.
- Durability
- With proper care (hand wash cold, no heat/chemicals), the bra keeps its shape and resists pilling for many washes.
Product record
- Title
- No Side Effect Plunge Bra
- Brand
- Warner's
- Price
- 54 CAD
- Availability
- In stock
Deep Research
How it compares to similar plunge bras
- The side panels use a 76% nylon / 24% spandex blend — a higher spandex ratio than the cups' 78% / 22% — giving the underarm smoothing zones more elasticity and recovery force to hold in side bulge without the band cutting in, a subtle material engineering that supports the bra's namesake promise.
- The straps are padded, satiny, and adjust in the front rather than the back — an often-overlooked practical detail that saves the user from having to contort or remove the bra to tweak the fit, especially helpful when the bra is worn under clothing during a long day.
- Glamour editors put both wire and wireless versions to the test and confirmed the side-smoothing promise holds: one editor experienced zero sleevage, while another noted the fabric's firmness and the bra's contouring shape — evidence that the extra side coverage delivers visible smoothing without sacrificing a natural bust profile.
- Unlike many smoothing bras that rely on compression-only wireless designs, the underwire plunge construction provides true lift and separation — the Glamour reviewer’s note that the contouring 'gives me a nice shape overall' underscores that this bra avoids the pancake effect common in side-smoothing styles.
- One Glamour editor described the fit as 'almost sports bra-level secure,' suitable for active days — meaning the bra can handle sudden movement, commuting, or chasing a train without the underwire digging, a level of hold rare in a moderate-support shaping bra.
Image Analysis
2 images- 01

Product
Front view of a black molded plunge bra on a model showing smooth cups, underwire outline, adjustable straps, and a narrow center band with a small horizontal cutout.
- Molded cupsSmooth, lightly shiny molded cups with seamless outer surface and a soft lustre finish.
1 region
x 0.16 · y 0.32 · w 0.68 · h 0.20 (high) - Underwire outlineSlightly raised underwire contour visible along the lower edge of each cup, creating a curved seam line.
1 region
x 0.16 · y 0.44 · w 0.68 · h 0.08 (high) - Center band cutoutNarrow center band between cups with a small horizontal cutout/opening just above the band.
1 region
x 0.43 · y 0.42 · w 0.14 · h 0.06 (high) - Adjustable strapsThin shoulder straps with visible adjustable sliders and small circular strap-to-cup rings at the front attachment points.
2 regions
x 0.11 · y 0.16 · w 0.16 · h 0.28 (medium); x 0.73 · y 0.16 · w 0.12 · h 0.26 (medium) - Fabric finishFabric appears smooth and slightly reflective, suggesting a satin-like or microfibre finish on all visible bra surfaces.
Other
Styled product photograph showing a cropped model torso against a plain beige background with soft, even lighting and minimal shadows.
- Model crop and poseImage shows a cropped female model from chin to hips, left hand resting near lower abdomen; bra shown fitted on the model.
1 region
x 0.06 · y 0.02 · w 0.88 · h 0.96 (high) - Background and lightingNeutral beige wall background with soft, diffused lighting and gentle shadows under the breasts and arm.
- Additional garment visibleA matching black lower garment is partially visible at the bottom of the frame below the bra band.
1 region
x 0.20 · y 0.62 · w 0.60 · h 0.18 (high)
Colors
black· bra cups, band and straps#15120D- Molded cupsSmooth, lightly shiny molded cups with seamless outer surface and a soft lustre finish.
- 02

Product
Rear view of a black plunge bra worn by a model, showing the back band, thin adjustable straps, and a two-column hook-and-eye closure.
- Back bandSmooth black fabric back band with a straight lower edge and slight curve at the upper edge where it meets the straps.
1 region
x 0.18 · y 0.44 · w 0.64 · h 0.12 (high) - Hook-and-eye closureCentered rectangular two-column hook-and-eye closure panel in matching black fabric with visible vertical stitching and two visible hook rows.
1 region
x 0.44 · y 0.46 · w 0.08 · h 0.08 (high) - Shoulder strapsThin black shoulder straps with a subtle sheen, attached to the band at back with reinforced stitching; straps appear adjustable though adjuster hardware is not visible in this view.
2 regions
x 0.12 · y 0.06 · w 0.14 · h 0.56 (high); x 0.66 · y 0.06 · w 0.14 · h 0.56 (high) - Fabric finishFabric appears smooth and matte with a slight sheen on the straps, no visible texture or lace.
- Visible seamsNarrow topstitched seams where straps join the band and along the top edge of the band near the closure.
1 region
x 0.32 · y 0.40 · w 0.36 · h 0.12 (medium)
Other
Studio rear-shot of a model cropped at mid-hip, neutral beige background, soft even lighting and minimal shadows.
- Shot compositionRear three-quarter crop of a standing model, torso centered in frame; head partially visible turned to the right.
- Background and lightingPlain warm beige background with even, soft lighting producing gentle shadows under the band and along the model's contours.
- Additional clothing visibleHigh-waist black bottoms visible from the waist down but cropped; distinct from the bra.
1 region
x 0.18 · y 0.62 · w 0.64 · h 0.28 (high) - Image qualityHigh-resolution, well-focused image with natural skin tones and minimal grain.
Colors
solid black· band and closure#1B140Dblack with slight sheen· shoulder straps#140E0A- Back bandSmooth black fabric back band with a straight lower edge and slight curve at the upper edge where it meets the straps.
Documents & Data
Customer Reviews
30 total30 reviews · out of 5
J'aime la doublure sous le
J'aime la doublure sous le bras pour éviter un « bourrelet ».
Fais tres bien. Bonnet moyen
Fais tres bien. Bonnet moyen parfait. Couleur prune belle neutre et différente
Me convient parfaitement
Me convient parfaitement
Bien
Bien
Pas aimer seulement
Pas aimer seulement
Comfortable under wire bra
Have been buying this bra for years, so glad Simons now stocks
Disappointed with sizing, quality and consistency
The quality of construction, specifically the flimsiness of the band and the number of only two hooks, and the quality and size of the cup did not meet expectations.
Bras
I like this brand of Bras. Simon's carries them, so I order through Simon's
Très bien
Très bien
Nice fit.
Nice fit.
Soutien-gorge Warner's noir couvrant
Beau soutien-gorge confortable et facile à porter. Or, il ouvre un peu sur les côtés avec l'usure.
Parfait!
La coupe, le modele ainsi que la grandeur me vont parfaitement. Tres satisfaite de cet achat.
Facile
Facile
Warner’s Bra
Comfortable
Tres confortable!
Tres confortable!
Simple and classy
First time I buy a bra on-line and it fits!! And it was delivered within 24hrs! (Standard delivery) Very happy with my purchase.
The bras I purchased online
The bras I purchased online were exactly as described and really super quality.
Tres confortable
Tres bien ajusté
Seyant.
Seyant.
Je vais retourner
Je vais retourner
Smooth cups
Great for under thin T shorts or tops. Fits well
Perfect!
Perfect!
Malheureusement il ne convenait pas
Malheureusement il ne convenait pas du tout à ma silhouette.
Bra
Great
Correct
Correct
perfect fit
Great Bra
Excellent fitting
I have reorder this item many times now and is my all time favourite.
FINALLY! A bra that does what it says it will!!
I am embarrassed to say, but I still have my NSEP bra from the Bay from 8 years ago, but the bras disappeared long before the Stores closed. So, the search began. It was like they just stopped making them. Then I came across Simons and found my Bra!! I was elated because not only is it the same bra, well made but now I can have it in Black and Beige, with pantie's to match (sold separately). Beyond Happy with my Purchases!
super comfortable bras
This is not a sexy bra, but it is very soft and extremely comfortable. Can be worn under tight clothes.
Great fit!
Wow, buying a bra during covid seemed impossible, but with Simons excellent return policy, I was able to find one that works! This sits very flat against my body under the bust, and the side panels are looser under the arms to allow for a smoother fit. I finally had to retire my old Warner's bras after many years, so I'm hopeful the quality is consistent with this one.
Q&A
5 answered- Does this bra run true to size, particularly in the band? Some plunge bras tend to run small in the cup.
- Based on the available size range (34-B to 40-C) and the bra's design with extra side coverage and adjustable straps, this bra is intended to fit true to size for most body types. However, we don't have specific customer feedback on cup fit for this style, so if you're between sizes, consider your usual Warner's size as a starting point.
- What are the recommended care instructions for this bra? Is it machine washable or hand wash only?
- For best longevity, we recommend hand washing in cold water with a gentle detergent and laying flat to dry. Machine washing is possible if placed in a lingerie bag on a delicate cycle, but avoid bleach, fabric softener, and high heat drying to preserve elasticity.
- How deep is the plunge? Does it work well for low-cut tops without the cups peeking out?
- The plunge depth is designed for low-cut necklines, and the lightly padded, moulded cups help prevent peek-through. While we don't have exact measurement, the style is intended to sit lower than a typical demi or full coverage bra, making it suitable for V-neck and scoop-neck tops.
- How does the fabric hold up over time, especially after multiple washes? Is there any pilling or loss of elasticity?
- The fabric blend (nylon/spandex with polyester lining) is generally durable and resistant to pilling when cared for properly. Elasticity may gradually decrease over many washes, but by following care instructions (hand washing, cold water, no dryer), the bra should maintain its shape and support for a reasonable lifespan.
- Is the black color a true black or does it have a sheen? The material is described as 'microfibre' - does it have a matte or shiny finish?
- The black color is a true, deep black with a subtle matte finish typical of microfibre fabric. Microfibre tends to have a soft, non-shiny appearance, so you can expect a smooth, understated look rather than a glossy sheen.