SPANX® Poplin Oversized Button-Up Shirt – Classic White
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💃 Plus-Size Friendly | ✨ Effortlessly Chic | 🖤 Closet Staple | ⚡ Selling Fast
Designed for real curves, real comfort, and everyday wear in sizes M–3X.
Meet your new favorite top. A true wardrobe essential, the SPANX® Poplin Oversized Button-Up Shirt in Classic White is the timeless button-down every closet needs. Crafted from premium Supima® cotton with a super-fine yarn count, this lightweight yet durable shirt delivers a polished look with all-day comfort.
Featuring an oversized silhouette, a high-low shirttail hem, and pleated back detail, this style is perfect for the office, travel, and everyday wear, and pairs effortlessly with your favorite denim, trousers, and accessories.
Why You'll Love It
- Classic white button-up that never goes out of style
- Premium Supima® cotton feels soft and luxurious
- Flattering fit designed with curves in mind
- Oversized fit creates a comfortable, polished silhouette
- Lightweight fabric makes it ideal for every season
- High-low hem adds flattering coverage
- Perfect for work, weekends, travel, or everyday wear
- Pairs beautifully with SPANX® pants, Judy Blue jeans, and skirts
- An easy layering piece for endless outfit combinations
- A closet staple you'll reach for again and again
Fit & Feel
- Fit: Oversized, relaxed
- True to size: Yes
- Length: High-low shirttail hem
- Fabric feel: Lightweight, woven cotton
- Stretch: None
- Neckline: Classic collared button front
- Sleeves: Long
- Coverage: Full coverage
- Bra-friendly: Yes
- Layering-friendly: Yes
- Sizing recommendation: Choose your normal size for the intended oversized fit. Available in sizes M–3X.
Who It's Great For
This style is especially flattering for:
- Circle Shapes – The relaxed shape and longer hem provide comfortable coverage while creating a clean, elongated silhouette.
- Triangle Shapes – The structured collar and relaxed fit balance proportions beautifully.
- Hourglass Shapes – The soft fabric drapes naturally and can be styled tucked to define your waist.
- Rectangle Shapes – The oversized shape and back pleating create dimension and effortless movement.
- Inverted Triangle Shapes – The relaxed silhouette softens the overall look while maintaining a polished feel.
Remember: These are styling suggestions, not rules. The best outfit is always the one that makes you feel confident.
Fabric & Care
Fabric content: 100% Supima® Cotton
- Wash: Machine wash cold, gentle cycle
- Wash with like colors
- Dry: Tumble dry low, remove promptly
- Iron: Low iron if needed, or dry clean
Styling Ideas
- Pair with jeans and sneakers for elevated everyday style
- Layer over a graphic tee for a chic casual outfit
- Wear with trousers for a professional office look
- Style open as a lightweight layering piece
- Complete the look with Love Marlow jewelry and accessories
Model Info
Stacey
- Height: 5'4"
- Usual Size: 20, 3x
- Wearing Size: 3x
Why Shop Love Marlow
At Love Marlow, we specialize in boutique fashion designed for real women in mid and plus sizes 8–28. Every piece is thoughtfully selected for flattering fits, comfortable fabrics, and styles that help you create outfits you'll feel confident wearing.
As a women-owned boutique in Sioux Falls, South Dakota, we offer personalized styling, exceptional customer service, and fashion-forward pieces you won't find everywhere else.
Whether you're shopping online or visiting us in store, we're here to make finding clothes you love easier.
Looking For More Boutique Tops?
Shop more elevated basics, boutique blouses, workwear styles, and layering pieces designed for everyday confidence.
Size Chart | Measurements
| Size | Size | Bust | Waist | Hips |
| XS | 0-2 | 32-34 | 25-27 | 34-36 |
| S | 4-6 | 34-36 | 27-29 | 36-38 |
| M | 8-10 | 36-38 | 29-31 | 38-40 |
| L | 12-14 | 38-40.5 | 31-33.5 | 40-42.5 |
| XL | 16 | 40.5-43 | 33.5-36 | 42.5-45 |
| 1X | 18-20 | 43-46 | 36-39 | 45-48 |
| 2X | 22-24 | 46-49 | 39-42 | 48-51 |
| 3X | 26 | 49-52 | 42-45 | 51-54 |
We understand that every body is unique, so we've provided garment measurements above to help you find your best fit. Please note that measurements are taken from a single piece, and even items in the same size may vary slightly.
Need extra help? Connect with us via chat! We love helping you find styles that fit and flatter at Love Marlow — your Sioux Falls, SD mid-size and plus-size boutique.
Shipping & Pick-Up Information
💗 Free In-Store Pick-Up
Local to Sioux Falls? We’ve got you covered with free in-store pick-up!
Orders are typically ready within a few hours during business hours. If you place your order after hours or on a holiday, it will be ready the next business day.
You’ll receive an email as soon as your order is ready to grab—quick, easy, and hassle-free.
🚚 USPS Ground Advantage
- Estimated transit time: 1–7 business days (excluding holidays)
- Orders typically ship within 1–2 business days
- This is our primary shipping method for items that can’t be shipped by air (HAZMAT restrictions apply)
⚡ USPS Priority Mail
- Estimated transit time: 1–5 business days (excluding holidays)
- Orders typically ship within 1–2 business days
- Shipping rates are calculated at checkout
✨ USPS Priority Mail Express
- Estimated transit time: 1–2 business days (excluding holidays)
- Orders typically ship within 1–2 business days
- Shipping rates are calculated at checkout
📦 Please Note
- Love Marlow ships within the continental United States only
- During free shipping promotions, USPS Ground Advantage will be used
- If another shipping method is selected, it will be adjusted or an additional invoice may be sent for the difference (based on customer preference)
Need to make a return or exchange? We’ve got you covered!
- Exchanges & Store Credit: Items may be exchanged or returned for store credit within 14 days of purchase.
- Requirements: Items must be unwashed & unworn, with tags attached, and you must have your original receipt.
- Final Sale Items: The following cannot be returned or exchanged: Sale items, Swimsuits, Undergarments, Tights, Leggings, Jewelry, Handbags, and Seasonal Items.
- Non-Compliant Returns: Returns that don’t meet our policy may be denied or subject to a fee up to 25% of the original purchase price.
To start your return, [click here].
To view entire return policy, [click here].
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Every product is measured
At Love Marlow, we believe that the perfect fit starts with precision, which is why we carefully measure each style in our collection by hand.
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In the Size Chart | Measurement Section of each Product Description, you'll find detailed measurements for that specific item, giving you a better understanding of how it will fit your shape.