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Sienna | Women's Button-Front Split-Neck Side-Slit Long-Sleeve Tunic

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The Sienna Women's Button-Front Split-Neck Side-Slit Long-Sleeve Tunic is your go-to choice for effortless everyday style. Crafted from a soft ribbed knit with a button-front placket, curved side-slit hem, and full-length sleeves, this tunic is perfect for women who want a relaxed silhouette that still feels put-together.

Why You'll Love It

  • Button-Front Placket: Decorative wood-tone buttons at the split neckline add a subtle, elevated detail to the classic design.
  • Side-Slit Buttons: Matching buttons at the hem slits echo the neckline detail and allow for easy, flattering movement.
  • Ribbed Knit Texture: The soft, stretchy ribbed fabric offers a comfortable fit while keeping a polished, tailored look.

Perfect For

Pairing with your favorite jeans for a laid-back weekend look, layering under a jacket on cooler days, dressing up with white pants for a smart-casual outfit, or wearing solo with leggings for a cozy day at home.

Care Instructions

  • Machine wash cold on a gentle cycle with like colors.
  • Do not bleach.
  • Lay flat to dry to preserve the ribbed texture.
  • Iron on low heat if needed, avoiding the button area.

Frequently Asked Questions

How does this tunic close?
It features a button-front placket at the split neckline that adds a decorative, easy-to-style detail.

What sizes are available?
This tunic is available from Small to 3XL, so you can find a comfortable, relaxed fit for your body type.

Is the fit relaxed or fitted?
It has a relaxed, easy silhouette designed for all-day comfort without feeling restrictive.

Can I dress this up or down?
Yes, it works well styled casually with denim or dressed up with tailored pants for a smart-casual occasion.

Size Chart

Size Bust (IN) Length (IN) Shoulder (IN) Sleeve Length (IN)
S 36.0 28.0 15.5 26.5
M 41.0 29.0 17.0 27.0
L 44.0 30.0 18.0 27.0
XL 48.0 31.0 19.5 27.5
2XL 52.0 32.0 20.5 28.0
3XL 56.0 33.0 22.0 28.5

At Nicole's Coastal Boutique, customer satisfaction comes first. That's why we keep you constantly updated on your order and always offer free shipping with a track & trace code.

We offer a 100% money-back guarantee within 30 days of receiving your order. If you're not completely satisfied, simply return your item for a full refund—no questions asked.

Our customer service is available 24/7 to answer all your questions and comments. Whether you need advice on a product or help with an order, we are here to support you.

Don’t hesitate to contact us; we’re happy to help!

Please contact us at info@nicolescoastalboutique.com

A Little More to Love

The more you add, the more you save.

For today only, we're unlocking something special for our community: stackable savings on the pieces everyone can't stop reaching for.

Whether you're picking out something for your daughter, surprising your sister, or finally treating yourself, now's the moment to grab those favorites before they're gone.

Build your own bundle:

Buy 2 pieces → Extra 10% off
Buy 3 → Extra 15% off
Buy 4 → Extra 20% off
Buy 5+ → Extra 25% off

This offer runs today only and won't be coming back. And you know how it goes with us: once a style sells out, it's gone for good.

Stock is limited. Today's the day to shop.

FREE SHIPPING WITHIN THE U.S.

We make shopping effortless with free delivery anywhere in the United States on all orders, so your items arrive safely and conveniently at your door.

30-DAY RETURNS

If your piece isn’t the perfect fit, you can easily return it within 30 days of delivery. Your satisfaction always comes first

Loved for the comfort

Our pieces are chosen for comfort you can feel and style you can count on. Relax, feel confident, and enjoy timeless elegance daily.

FREE SHIPPING WITHIN THE U.S.

We make shopping effortless with free delivery anywhere in the United States on all orders, so your items arrive safely and conveniently at your door.

30-DAY RETURNS

If your piece isn’t the perfect fit, you can easily return it within 30 days of delivery. Your satisfaction always comes first

Loved for the comfort

Our pieces are chosen for comfort you can feel and style you can count on. Relax, feel confident, and enjoy timeless elegance daily.