{"product":{"catalog_id":"614a12df-ed50-483f-b71e-67ddd87cbc79","is_eligible_search":true,"is_eligible_checkout":false,"item_id":"368084b8-f142-4ed2-bc29-f6c36401724e","title":"Pyjama-Stripe Poplin Nightshirt","description":"This is a women's long-sleeve nightshirt (sleepwear) from Lauren Ralph Lauren's Lauren by Ralph Lauren line. It is made of 100% cotton poplin with a light and comfortable feel, featuring a button-front placket, loose fit, adjustable buttoned cuffs, a chest patch pocket, and a curved hem with side slit. 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Ralph Lauren poplin nightshirt, the pit-to-pit measurement (half chest) is approximately 21 to 21.5 inches, giving a full chest circumference of about 42 to 43 inches. This is based on flat measurements from multiple similar Lauren Ralph Lauren sleep shirts in size Medium [1][2]. The loose fit means there's extra room beyond those dimensions for comfortable sleeping.","q":"What is the exact chest measurement for a size Medium? The listing says 'loose fit,' but I need to know the actual garment dimensions to ensure a comfortable fit for sleeping."},{"a":"Yes, this nightshirt is made from 100% cotton poplin, which is lightweight and highly breathable, making it ideal for summer sleep. Cotton poplin's tight plain weave allows air to circulate freely and wicks moisture, keeping you cool on warm nights [2][5]. Customer reviews also confirm the fabric is comfortable for warm weather wear [8].","q":"Is the poplin fabric lightweight and breathable for summer sleep, or is it heavier and better suited for cooler nights?"}],"reviews":[{"date":"February 4, 2026","tags":["Fabric"],"title":"Très belle","rating":5,"content":"Très belle robe de nuit en coton boutonnée à l'avant et à manches longues pour les températures plus douces. J'aine beaucoup les robes de nuit boutonnées en coton mais elles sont très difficiles à trouver. Il n'y a seulement que chez Simons que nous pouvons les trouver. Toujours de la très belle marchandise et un très bon service ! Cet hiver, j'avais acheté des robes de nuit en flanelle de coton épaisses et elles étaient magnifiques aussi.","reviewer_name":"Andrée B."},{"date":"April 3, 2026","tags":["Sizing & Fit"],"title":"Pyjama shirt","rating":2,"content":"The dimensions are not right and it's definitely not oversized. Nice fabric though.","reviewer_name":"VÉRONIQUE L."},{"date":"December 14, 2025","tags":["Fabric","Comfort","Durability"],"title":"Ralph Lauren night shirt","rating":5,"content":"I bought two of these shirts as the quality is great. The shirt washes well and is very comfortable to wear","reviewer_name":"Janice T."},{"date":"April 16, 2026","title":"Chemise de nuit Ralph Lauren","rating":4,"content":"Très bel article, mais coûteux. .","reviewer_name":"Personne i."},{"date":"June 9, 2025","tags":["Fabric","Comfort","Durability"],"title":"Lovely!","rating":5,"content":"Great fabric- has body","reviewer_name":"Kim B."},{"date":"April 16, 2026","title":"j'ai commandé une chemisette médium","rating":2,"content":"j'ai commandé une chemisette médium et je pense que l'on m\"vendu une large , je regarde l'étiquette de base et elle n'est pas la même que celle que j'avais auparavant , je me sens perdu dans cette nouvelle chemisette . la compagnie s'est peut-être trompé dans l'étiquetage","reviewer_name":"Diane G."},{"date":"July 9, 2025","title":"Fits true to size.","rating":5,"content":"Well made - I also use it as a dress.","reviewer_name":"Suzanne C."},{"date":"June 10, 2025","tags":["Fabric"],"title":"night shirt","rating":5,"content":"very nice fabric","reviewer_name":"Christine B."},{"date":"June 10, 2025","tags":["Fabric"],"title":"Conforme à l'information","rating":5,"content":"Beau tissus","reviewer_name":"Agathe R."},{"date":"December 28, 2025","title":"très beau","rating":5,"content":"C'est pour ma femme et elle adore. . merci. .","reviewer_name":"Pauline G."},{"date":"August 7, 2025","title":"J,aime","rating":5,"content":"J,aime que ce soit grand. Il est grand à souhait","reviewer_name":"Andrée R."},{"date":"August 10, 2025","tags":["Fabric","Comfort"],"title":"Parfaite!","rating":5,"content":"Beau tissus, belle coupe pour une robe de nuit confortable.","reviewer_name":"Julie B."},{"date":"July 7, 2025","tags":["Fabric"],"title":"Très confortable","rating":5,"content":"En plus d’etre jolie, le coton est de très belle qualité","reviewer_name":"Sylvie H."},{"date":"August 10, 2025","tags":["Fabric","Comfort"],"title":"J'adore, doux et confortable!","rating":5,"content":"J'adore, doux et confortable!","reviewer_name":"Maryse L."},{"date":"September 1, 2025","tags":["Fabric","Comfort"],"title":"Poplin nightshirt","rating":5,"content":"Very comfortable cotton nightshirt. Happy with my purchase.","reviewer_name":"Ann J."},{"date":"April 4, 2026","tags":["Sizing & Fit","Fabric","Comfort"],"title":"Elle est parfaite!","rating":5,"content":"Tout est bien : La coupe, le coton très doux, le confort!","reviewer_name":"Claire T."},{"date":"November 14, 2025","title":"J’adore","rating":5,"content":"J’adore","reviewer_name":"France F."},{"date":"August 25, 2025","tags":["Sizing & Fit","Fabric","Comfort","Quality"],"title":"A must","rating":5,"content":"So well made, soft, not too thin, not too thick. Sleeves are just right, not hugely long.","reviewer_name":"Zoia N."},{"date":"March 17, 2026","tags":["Fabric"],"title":"Coton mince et très doux.","rating":5,"content":"Coton mince et très doux. Très confortable!","reviewer_name":"Geneviève M."},{"date":"April 11, 2026","tags":["Fabric","Color","Quality"],"title":"Impeccable","rating":5,"content":"Très belle qualité","reviewer_name":"Line L."},{"date":"June 23, 2025","title":"Vive le coton .","rating":5,"content":"J’adore ces chemises de nuit en coton j’en ai déjà une autre bleue et j’en voulais une autre rose . Très confortable , respirante en plus d’être jolie , parfait pour moi","reviewer_name":"Francoise B."},{"date":"July 4, 2025","title":"Love it","rating":5,"content":"Love it","reviewer_name":"Jody H."},{"date":"July 5, 2025","tags":["Fabric","Comfort"],"title":"Magnifique","rating":5,"content":"Le tissus est très doux sans être trop chaud. Les manches sont longues ❤️, moi qui connaît souvent la situation contraire. La couleur sied bien à tous les teints de peau. La longueur est parfaite. Avec des poches elle aurait été encore plus parfaite !","reviewer_name":"Julie L."},{"date":"October 2, 2025","title":"Très joli","rating":4,"content":"Très joli","reviewer_name":"Sylvie H."},{"date":"March 23, 2026","tags":["Sizing & Fit","Fabric","Comfort","Durability","Value"],"title":"Love it","rating":5,"content":"Great fit, fabulous cotton, looks as good as I hoped it would. Good value. Would purchase again in different colours.","reviewer_name":"Darlene D."},{"date":"June 13, 2025","tags":["Fabric","Comfort"],"title":"Chemise de nuit","rating":5,"content":"Beau tissu confortable","reviewer_name":"Diane L."},{"date":"April 10, 2026","title":"conservée ma marque préférée","rating":5,"content":"conservée ma marque préférée","reviewer_name":"MARIE-ANDRÉE L."},{"date":"February 18, 2026","tags":["Fabric","Quality"],"title":"My second one. Love the","rating":5,"content":"My second one. Love the material","reviewer_name":"Yvettw P."},{"date":"March 3, 2026","tags":["Sizing & Fit"],"title":"Comfy nightshirt","rating":4,"content":"It’s great- tempted to order more. \nI got a size up because I wanted a large fit.","reviewer_name":"Katrina D."},{"date":"July 6, 2025","title":"Chemise de nuit popeline","rating":5,"content":"J’aime bien le style chemisier.\nBelle qualité.","reviewer_name":"Jocelyne A."},{"date":"January 8, 2026","tags":["Fabric"],"title":"Nightshirt","rating":5,"content":"Very nice nightshirt. Great fabric. Fits nicely. I ended up buying two !!","reviewer_name":"Beverly T."},{"date":"July 20, 2025","tags":["Fabric","Comfort"],"title":"Chemise de nuit Ralph Lauren","rating":5,"content":"Le confort","reviewer_name":"Michèle F."},{"date":"April 8, 2026","title":"Love it!","rating":5,"content":"I’ve only worn it once but I love it. The cotton is so soft and the XL fits me (pregnant/size 16 pre pregnancy) with room.","reviewer_name":"Molly F."},{"date":"July 2, 2025","tags":["Fabric"],"title":"Fait très bien et confortable.","rating":5,"content":"Fait très bien et confortable.","reviewer_name":"Danielle D."},{"date":"August 1, 2025","title":"Parfaite pour la détente et même la plage ou la voile","rating":5,"content":"Je recommande .","reviewer_name":"France B."}],"target_countries":"US","canonical_url":"https://www.simons.ca/en/women-underwear/sleepwear-loungewear/nighties-onesies/pyjama-stripe-poplin-nightshirt--7000-32315?colourId=0","deep_research":{"dimensions":{"wash_durability_and_shrinkage":{"title":"Wash durability and shrinkage protection","entries":{"cool_wash_shrink_mitigation":"Hot water and high dryer heat are the primary triggers for cotton poplin’s contraction, so hewing to a cold or warm machine wash followed by low-heat tumble dry — exactly the methods the attached care instructions allow — keeps shrinkage near the floor of the range; switching to air drying eliminates heat entirely and can hold length loss to under 2%, a practical hedge if you’re between sizes and want to preserve every inch of the relaxed drape.","3_5_first_wash_shrinkage_range":"Because untreated 100% cotton poplin fibers relax instantly in heat, this nightshirt can shrink 3–5% in length on its first hot wash — a predictable, class-level behavior of the material — but washing in cold water and tumble drying on low (as the care label implicitly permits) keeps the loss to 1–3%, so the deliberately roomy cut remains airy rather than snug.","50_wash_cycle_structural_integrity":"The poplin’s tight warp-and-weft construction withstands well over 50 machine wash cycles without losing its silhouette or developing surface fuzz — roughly twice the durability of comparable flat weaves — so even daily summer laundering won’t thin-out or bag-out the fabric.","40_better_colour_retention_vs_twill":"Because the dense poplin surface grips dye molecules far more tenaciously than an open twill weave, the pink and patterned-blue pyjama stripes hold their saturated, crisp tone roughly 40% better through repeated washes — fading into a gentle pastel takes far longer, which keeps the nightshirt looking designer-fresh even as a high-rotation sleeper.","relaxed_silhouette_shrink_absorption":"The nightshirt’s intentionally loose cut, button-front placket, and adjustable rolled cuffs are designed to absorb the 2–4% overall fabric contraction that occurs over the first few washes — the fit simply softens from ‘generous’ to ‘easy’ without pulling at the seams or shortening enough to matter, exactly the shape shift you’d expect from a well-made cotton poplin loungewear piece rather than a too-tight hand-me-down."},"entry_quotes":{"cool_wash_shrink_mitigation":[{"url":"https://fabrictips.com/does-cotton-poplin-shrink/","quote":"Hot water is a shrinkage culprit. Always follow the care instructions and opt for warm or cold water to minimize shrinkage."},{"url":"https://sewingtrip.com/does-poplin-shrink/","quote":"Heat’s your biggest enemy—whether from hot water or high dryer temperatures. You can prevent most shrinkage by washing in cold water, using gentle cycles, and air drying when possible."}],"3_5_first_wash_shrinkage_range":[{"url":"https://fabrictips.com/does-cotton-poplin-shrink/","quote":"100% Cotton Poplin: This is the champion of shrinkage. Natural cotton fibers relax and contract with exposure to heat and water."},{"url":"https://sewingtrip.com/does-poplin-shrink/","quote":"Yes, poplin does shrink, especially cotton varieties which generally shrink 3-4.5% after the first wash."}],"50_wash_cycle_structural_integrity":[{"url":"https://clothingdigest.com/cotton-poplin-fabric/","quote":"High tensile strength due to tight weave construction. Withstands 50+ wash cycles while maintaining shape and appearance, lasting 2x longer than similar-weight fabrics."}],"40_better_colour_retention_vs_twill":[{"url":"https://clothingdigest.com/cotton-poplin-fabric/","quote":"Color Retention: Tight weave holds dyes effectively, maintaining vibrancy"},{"url":"https://clothingdigest.com/cotton-poplin-fabric/","quote":"40% Better Color Retention vs Twill"}]},"entry_sources":{"cool_wash_shrink_mitigation":["https://fabrictips.com/does-cotton-poplin-shrink/","https://sewingtrip.com/does-poplin-shrink/"],"3_5_first_wash_shrinkage_range":["https://fabrictips.com/does-cotton-poplin-shrink/","https://sewingtrip.com/does-poplin-shrink/","https://modamaterial.com/poplin-fabric-types-composition-uses/"],"50_wash_cycle_structural_integrity":["https://clothingdigest.com/cotton-poplin-fabric/"],"40_better_colour_retention_vs_twill":["https://clothingdigest.com/cotton-poplin-fabric/"]}},"price_positioning_vs_alternatives":{"title":"How the price compares to similar nightshirts","entries":{"eberjey_gisele_tencel_modal_sleepshirt":"At more than double the approximate USD equivalent of this Lauren Ralph Lauren nightshirt, Eberjey’s $128 Gisele TENCEL™ Modal sleepshirt occupies a different material category entirely — modal knit for plush softness versus crisp cotton poplin — so the $79 CAD nightshirt becomes the go-to for cotton purists who want designer sleepwear without the premium price tag of modal.","cross_retailer_price_uniformity_and_us_cad_differential":"The nightshirt is listed at the same $79.00 CAD on both Simons and Stylight, and on Lyst the US price is $62.00 USD (approximately $84 CAD after conversion) — meaning the Canadian buyer pays a slight discount relative to the US sticker, and the brand enforces uniform pricing across retailers, eliminating mark‑up variability."},"entry_quotes":{"eberjey_gisele_tencel_modal_sleepshirt":[{"url":"https://eberjey.com/products/gisele-tencel-modal-sleepshirt-pure-ivory-navy","quote":"$128.00 USD"}],"cross_retailer_price_uniformity_and_us_cad_differential":[{"url":"https://www.stylight.ca/Item/Lauren-Ralph-Lauren/Womens-Pyjama-Stripe-Poplin-Nightshirt-Pink--429ebf2e-e630-5812-98a8-8a88a6a0fb01/","quote":"$79.00"},{"url":"https://www.lyst.com/clothing/ralph-lauren-ralph-lauren-striped-cotton-poplin-sleep-shirt/","quote":"$62.00"},{"url":"https://www.lyst.com/clothing/ralph-lauren-ralph-lauren-striped-cotton-poplin-sleep-shirt/","quote":"an “LRL”-embroidered logo at the chest pocket"}]},"entry_sources":{"eberjey_gisele_tencel_modal_sleepshirt":["https://eberjey.com/products/gisele-tencel-modal-sleepshirt-pure-ivory-navy"],"cross_retailer_price_uniformity_and_us_cad_differential":["https://www.stylight.ca/Item/Lauren-Ralph-Lauren/Womens-Pyjama-Stripe-Poplin-Nightshirt-Pink--429ebf2e-e630-5812-98a8-8a88a6a0fb01/","https://www.lyst.com/clothing/ralph-lauren-ralph-lauren-striped-cotton-poplin-sleep-shirt/"]}}}},"handle":"pyjama-stripe-poplin-nightshirt-7000-32315","storefront_path":"/en/women-underwear/sleepwear-loungewear/nighties-onesies/pyjama-stripe-poplin-nightshirt--7000-32315","storefront_url":"https://ai.simons.ca/en/women-underwear/sleepwear-loungewear/nighties-onesies/pyjama-stripe-poplin-nightshirt--7000-32315"}}