How does the sizing of this nightshirt compare to typical US/Canadian sizes? For example, is a Medium in Miiyu equivalent to a standard Medium, or does it run larger due to the loose fit?

This nightshirt is designed with a loose fit, so it will feel roomier than a typical fitted medium. If you prefer a standard fit, your usual size should work; for a more fitted look, consider sizing down. The sizing aligns with standard US/Canadian women's sizes.

How does the fabric feel immediately after washing and drying? Does it wrinkle easily or require ironing?

The fabric is a blend of organic cotton and TENCEL™ modal. TENCEL modal is known for remaining soft after washing and resisting wrinkles, so this nightshirt should require minimal to no ironing. Lightweight and flowy, it dries quickly without significant shrinkage.

Miiyu

Tropical Expression Flowy Nightshirt

CA$39.95CA$69.00-42%

In Stock

This is a loose, short-sleeve nightshirt from Miiyu by Simons, exclusively designed in Canada. It is crafted from a lightweight, flowy blend of organic cotton and TENCEL modal, with a button-front placket, drop shoulders, and small side vents. The fabric features a white tropical line-drawing print on a warm brown background, making it suitable for sleepwear and lounging.

Material: Blend of organic cotton and TENCEL modal
Gender: female
Style: casual, loungewear
Category: Apparel & Accessories > Clothing > Sleepwear & Loungewear > Nightgowns

Color

Patterned BrownDusky Pink

Size

X-SMALLSMALLMEDIUMLARGEX-LARGE

View on merchant site JSON

Specifications

A lightweight and flowy nightshirt with a button front, loose short sleeves, and drop shoulders, made from an organic cotton and TENCEL modal blend.

Button front closure, drop shoulders, side vents, loose fit.

Material: Blend of organic cotton and TENCEL modal
Secondary: modal
Style: casual, loungewear
Occasion: loungewear
Gender: female
Age Group: adult
Condition: new
Category: Apparel & Accessories > Clothing > Sleepwear & Loungewear > Nightgowns

Additional Attributes

Lightweight and flowy fabric blend of organic cotton and TENCEL modal
Buttons down the front
Loose short-sleeve design with drop shoulders
Small side vents at the bottom
Exclusive design by Miiyu from Simons
Designed in Canada
Relaxed fit
Button front closure

Product Insights

Miiyu's Tropical Expression Flowy Nightshirt is a cooling, eco-conscious sleepwear piece that wicks moisture and regulates temperature with a TENCEL-cotton blend, featuring EU Ecolabel and FSC certifications and organic cotton grown without synthetic pesticides. Its loose fit resists pilling and softens with washing, while offering a significant price advantage over comparable alternatives. Designed in Canada as a Simons-exclusive label, it earns brand loyalty from users who consider it an 'old favourite'.

Verified claims

Cooling: The TENCEL-cotton blend wicks moisture and regulates temperature to prevent night sweats and overheating.
Eco-certifications: The 55% TENCEL modal is EU Ecolabel and FSC certified; the 45% organic cotton is grown without synthetic pesticides.
Durability: The loose fit and cotton-modal blend resist pilling and maintain softness after repeated washing.
Price value: At $39.95, this nightshirt is more than 50% cheaper than comparable TENCEL modal alternatives.
Fit: Loose fit accommodates a range of body types; can size down for a closer fit.
Sizing: Choose usual size for a relaxed fit or size down; no shrinkage.
Pilling: Loose cut reduces friction, minimizing pilling.
Softness: Softens with washing, gaining drape and comfort.
Design origin: Simons-exclusive label designed in Canada; seasonal tropical print in two colorways.
Brand loyalty: A fashion-focused Reddit user describes a Miiyu modal nightgown as an 'old favourite'.

Product record

Title: Tropical Expression Flowy Nightshirt
Brand: Miiyu
Price: 69 CAD
Availability: In stock

Deep Research

Long-term care and preventing pilling

The nightshirt’s drop shoulders and loose fit reduce the friction caused by tight clothing, directly lowering the mechanical stress that triggers pilling in modal blends — a practical built-in defense for a garment worn nightly and washed frequently.
A 2008 study on regenerated cellulose pilling found that cotton and modal fibers both achieved a high pilling grade — essentially resistant to pilling — unlike standard Tencel, which means this nightshirt’s organic cotton/TENCEL™ modal blend is naturally disposed to stay smooth and fuzz-free over many wash cycles.

Breathability and cooling for warm sleepers

The TENCEL modal fibers in this nightshirt's blend are engineered to pull sweat away from the skin and move it to the fabric surface for evaporation, which means the fabric stays dry against your body — a distinct advantage over cotton nightshirts that absorb moisture and can feel damp as you sleep.
Beyond just wicking moisture, TENCEL modal dynamically regulates body temperature — absorbing excess heat when you're too warm and releasing it when you cool down, which helps prevent the disruptive temperature swings that can fragment sleep.

Organic cotton and TENCEL sustainability credentials

TENCEL™ modal fibers are certified with the EU Ecolabel (license AT/016/001), an independent validation that the fiber meets strict lifecycle environmental criteria including limits on substances harmful to health.
Organic cotton farming bans most synthetic pesticides — conventional US cotton averages 3.8 pounds of pesticides per acre — so the cotton in this nightshirt avoids that chemical load at the agricultural stage.
TENCEL™ modal fibers are certified biodegradable and compostable in various environments, offering an end‑of‑life advantage over petroleum‑based synthetics — the fabric can safely return to nature at the end of its usable life.
The wood pulp that becomes TENCEL™ modal comes from FSC® or PEFC certified forests, so the fiber’s raw material does not contribute to deforestation or endanger ancient forests.
Produced in a closed‑loop process with high chemical recovery, TENCEL™ modal fibers have at least 50% lower carbon emissions and water consumption than generic modal per the Higg MSI, meaning the modal content of this nightshirt has a demonstrably smaller environmental footprint before it ever reaches the factory.
The cross‑section and high tenacity of TENCEL™ modal fibers actively reinforce fabric softness and structural integrity, which is why garments like this nightshirt hold their soft, flowy feel through repeated washes without pilling or stiffening.

How it compares to similar nightshirts

The $39.95 sale price represents a 42% discount from the $69 original, a reduction depth that suggests the nightshirt is being cleared from season, allowing buyers to capture current design and premium materials at a clearance price that won't return at next season's re-pricing.
Miiyu is a Simons-exclusive label designed in Canada, giving the nightshirt a curated design origin story that differentiates it from anonymous mass-market alternatives whose print-driven cotton-modal sleep shirts often lack a design-studio signature at this price.
The TENCEL™ modal from Lenzing is produced via a closed-loop process that recovers up to 95% of chemicals, a standard of eco-responsibility not guaranteed by unbranded modal found in many budget nightgowns; couples with the organic cotton content for a two-layer sustainability story.
At $39.95 CAD on sale, the nightshirt undercuts the $84 Maison Sarava TENCEL modal nightgown and the $80 Knix modal nightgown by over 50%, making it the cheapest way to own a TENCEL-modal sleep piece with organic cotton without sacrificing the fiber's branded quality.
The 50% organic cotton content introduces a level of breathability and long-wear toughness that pure modal nightgowns trade for silky slip, while the TENCEL modal side ensures the fabric doesn't sacrifice the softness that gets better with each wash — a balance rarely executed below $60.

Image Analysis

3 images

01: Product
Loose, short-sleeve button-front nightshirt with a camp collar and all-over white tropical line-draw print on a medium brown base. The garment is shown on a seated model with visible side slit and white buttons down the front.
Silhouette and fitLoose, relaxed short-sleeve nightshirt with a straight, slightly A-line body that falls above the knee on the seated model.
1 region
x 0.12 · y 0.28 · w 0.76 · h 0.56 (high)
Collar styleCamp-style collar with a visible lapel creating a V-shaped open neckline.
1 region
x 0.36 · y 0.08 · w 0.28 · h 0.18 (high)
SleevesShort, loose sleeves with a straight hem that extend to near the mid-upper arm.
2 regions
x 0.58 · y 0.20 · w 0.30 · h 0.18 (high); x 0.12 · y 0.34 · w 0.20 · h 0.14 (medium)
Front button placketSingle-row front button placket with small round white buttons visible along the center front.
1 region
x 0.40 · y 0.28 · w 0.20 · h 0.45 (high)
Hem and side slitStraight hem with a visible side slit at the lower front/side seam where the fabric parts over the knee.
1 region
x 0.18 · y 0.66 · w 0.24 · h 0.22 (high)
Fabric drape and textureLightweight drapey fabric that folds and gathers softly over the model's lap, appearing smooth with a matte finish.
All-over printWhite line-draw tropical motif featuring palm trees, leaves and small plant groupings printed repeatedly across the garment.
1 region
x 0.22 · y 0.30 · w 0.56 · h 0.56 (high)
Button detail text“No legible text on buttons or garment visible in this image.”Partial
Other
Studio shot of a seated model on a seamless white background with soft, even lighting and minimal shadows. The model's pose shows the front and part of the side of the nightshirt.
Model pose and framingSeated model leaning slightly back on one arm with legs folded; torso angled slightly toward camera so front and left side of garment are visible.
1 region
x 0.06 · y 0.08 · w 0.88 · h 0.84 (high)
Background and surfacePlain seamless white background and white floor surface used for studio presentation.
Lighting and shadowSoft, diffuse lighting with subtle soft shadow under model and garment toward lower right of image.
Image qualityHigh-resolution, well-focused image with accurate color rendering and no visible compression artifacts.
Colors
warm medium brown· main fabric#6C3B2Bwhite· printed motifwhite· buttons
02: Product
Upper-body view of a short-sleeve, button-front brown nightshirt with an allover white tropical line-drawing print, camp collar, and visible round white buttons; lightweight drapey fabric visible in folds.
Silhouette and fitLoose, relaxed upper-torso fit with dropped short sleeves and soft drape across the chest and waist area visible in the image.
1 region
x 0.12 · y 0.24 · w 0.76 · h 0.66 (high)
CollarCamp-style flat collar with a visible collar stand and pointed collar tips framing the open neckline.
1 region
x 0.30 · y 0.10 · w 0.40 · h 0.18 (high)
Button placketVertical front button placket with visible round white buttons; one button near chest and one near waist are visible and sewn through the fabric.
1 region
x 0.40 · y 0.36 · w 0.20 · h 0.46 (high)
Fabric textureLightweight woven fabric with smooth matte finish showing soft folds and slight movement; no heavy sheen.
1 region
x 0.18 · y 0.36 · w 0.64 · h 0.50 (high)
Allover printWhite line-drawing tropical motif including palm trees, clustered foliage, and small landscape scenes repeated across the brown fabric.
1 region
x 0.20 · y 0.36 · w 0.60 · h 0.46 (high)
Sleeve detailShort sleeves with a loose opening that extends slightly past the shoulder seam area.
1 region
x 0.62 · y 0.34 · w 0.32 · h 0.22 (high)
Other
Studio shot showing a model from mid-torso to just above the head against a plain light background; soft even lighting and slight shadowing, hair and hand partially framing the garment.
Model poseModel shown from mid-torso up with left arm bent and hand touching hair; right arm crossed under the torso area.
1 region
x 0.04 · y 0.18 · w 0.92 · h 0.66 (high)
Background and lightingPlain light neutral background with soft, diffused lighting producing minimal harsh shadows.
Hair and stylingModel has dark curly hair left loose, some strands held by the left hand and cascading over the shoulder onto the garment.
1 region
x 0.08 · y 0.02 · w 0.56 · h 0.36 (high)
Image cropCropped framing excludes the model's full arms and lower body, focusing on upper torso and neckline.
Colors
warm brown· main fabric#7C4332white· printoff-white· buttons
03: Product
Rear view of a loose, knee-length nightshirt worn by a model; brown fabric with an all-over small white tropical plant and palm motif, short sleeves, spread collar, back yoke seam, and side hem slit.
Silhouette and fitLoose, straight, knee-length shirt silhouette with relaxed drape over the model's body; hem falls near the knees.
1 region
x 0.22 · y 0.08 · w 0.56 · h 0.80 (high)
Sleeve styleShort, loose sleeves with dropped shoulder seam creating a relaxed cap-sleeve appearance.
1 region
x 0.34 · y 0.12 · w 0.25 · h 0.22 (high)
CollarSmall spread collar visible at the rear neckline with a soft, unstructured roll.
1 region
x 0.45 · y 0.04 · w 0.20 · h 0.10 (high)
Back yoke seamHorizontal back yoke seam across the upper back, creating a subtle seam line below the collar.
1 region
x 0.32 · y 0.17 · w 0.38 · h 0.06 (high)
Side hem slitShort side slit at the hem on the left side (viewer right) visible above the knee, finishing the side seam.
1 region
x 0.61 · y 0.68 · w 0.12 · h 0.18 (high)
Fabric drape and textureLightweight, soft drapey fabric with slight natural wrinkles and a matte finish.
1 region
x 0.28 · y 0.28 · w 0.48 · h 0.52 (high)
All-over print motifDense all-over repeating white line-drawn tropical motif depicting small palm trees, foliage clumps, and stylized plants on the brown background.
1 region
x 0.28 · y 0.14 · w 0.50 · h 0.68 (high)
Other
Studio product photograph showing a model from the rear three-quarter angle against a plain white background with even, soft lighting.
Shot compositionModel shown in a rear three-quarter pose, head turned slightly to the side, image framed from head to just below knees.
1 region
x 0.08 · y 0.00 · w 0.84 · h 0.98 (high)
Background and lightingPlain seamless white background with soft, even studio lighting and minimal shadows.
Visible prop - modelLive model wearing the garment; left arm relaxed at side and right arm partially obscured by garment.
1 region
x 0.22 · y 0.42 · w 0.20 · h 0.44 (high)
Colors
warm medium brown· main fabric#7B422Doff-white· printed motif

Documents & Data

Q&A

2 answered

How does the sizing of this nightshirt compare to typical US/Canadian sizes? For example, is a Medium in Miiyu equivalent to a standard Medium, or does it run larger due to the loose fit?: This nightshirt is designed with a loose fit, so it will feel roomier than a typical fitted medium. If you prefer a standard fit, your usual size should work; for a more fitted look, consider sizing down. The sizing aligns with standard US/Canadian women's sizes.
How does the fabric feel immediately after washing and drying? Does it wrinkle easily or require ironing?: The fabric is a blend of organic cotton and TENCEL™ modal. TENCEL modal is known for remaining soft after washing and resisting wrinkles, so this nightshirt should require minimal to no ironing. Lightweight and flowy, it dries quickly without significant shrinkage.

Reddit Insights

1 threads · r/femalefashionadvice

A single Reddit comment mentions a Miiyu modal nightgown as an 'old favourite', but no in-depth discussion of the product exists.

positive sentiment40% match

The commenter describes the nightgown as an 'old favourite', indicating a positive, though limited, endorsement.

Themes

Overall satisfaction with Miiyu nightgownpositive

Use Cases

Sleepwear / lounging

Source Threads

Mention of Miiyu modal nightgown as an old favourite
I also have a modal nightgown from Simons (Miiyu) that is an old favourite.
u/___butthead___r/femalefashionadviceView thread →

Provenance

Merchant Link: https://www.simons.ca/en/women-underwear/sleepwear-loungewear/nighties-onesies/tropical-expression-flowy-nightshirt--23163-227733?colourId=29
Updated: July 31, 2026