Free shipping on orders of $150+!

Your cart

Your cart is empty

New

SPANX® Poplin Oversized Button-Up Shirt – Classic White

Regular price $128.00
Unit price
per 
Stock:
 
Shipping calculated at checkout.

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.

The oversized silhouette, high-low shirttail hem, and pleated back detail create an effortlessly chic fit with the perfect amount of coverage. Wear it tucked, untucked, layered, or styled open for endless outfit possibilities.

Why You’ll Love It

  • 🤍 Classic white button-up that never goes out of style
  • ✨ Premium Supima® cotton feels soft and luxurious
  • 👚 Oversized fit creates a comfortable, polished silhouette
  • 💼 Perfect for office outfits, travel, and everyday wear
  • 🌿 Lightweight fabric makes it ideal for every season
  • 🖤 High-low hem adds flattering coverage
  • ✨ Easy layering piece for endless outfit combinations
  • 👖 Looks amazing with SPANX® pants, Judy Blue jeans, and skirts

Fit & Feel

  • Oversized, relaxed fit
  • High-low shirttail hem
  • Pleated back detail
  • Classic button-front design
  • Lightweight woven cotton
  • Non-stretch fabric
  • Layering-friendly
  • Available in sizes M–3X
  • If between sizes, choose your normal size for the intended oversized fit

Who It’s Great For

This style is especially flattering for:

❤️ Apple Shapes – The relaxed shape and longer hem provide comfortable coverage while creating a clean, elongated silhouette.

🍐 Pear Shapes – The structured neckline 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

  • 100% Supima® Cotton

Care:

  • Machine wash cold
  • Gentle cycle
  • Wash with like colors
  • Tumble dry low
  • Remove promptly
  • 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.
  • Add statement jewelry and accessories to complete the outfit.

Model Info

Stacey

  • Height: 5'4"
  • Usual Size: 20, 3x
  • Wearing Size: 3x

Why Shop Love Marlow

At Love Marlow, we believe every woman deserves clothing that fits beautifully and feels amazing. Our boutique collection features stylish, comfortable pieces for women in mid and plus sizes 8–28, helping you create outfits that feel confident and effortless.

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

How we measure

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.

 

Loved by Our Community: Honest Reviews from Women Who Wear It

Create a Wishlist

Easily save your favorite styles and come back to them anytime — whether you're shopping in-store or online! 💖

---

Share your wishlist with friends and family or let our stylists look it up in-store to help you find the perfect fit. Your fashion faves, all in one place! 🛍️✨

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.

---

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.