4.7 / 5 (1300+ reviews)

Mariella | Long-Sleeve Two-Piece Surfing Tankini Set

$225.00 $74.95 Save 66%
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REVIVAL SALE:

Due to the high order volume, our stock is very limited...
If you are still able to press the 'Add to Cart' button, there's still some stock left!

Make waves in the Mariella | Long-Sleeve Two-Piece Surfing Tankini Set

The Mariella | Long-Sleeve Two-Piece Surfing Tankini Set is made for active beach days and confident coverage. The long-sleeve top gives an easy, secure feel while you swim, paddle or stroll the sand. Paired with comfortable bottoms, it’s a practical, sun-smart choice for every splash-filled adventure.

Why You’ll Love This Set

✔️ Comfortable and Supportive – The top feels secure, gives shaping, and has long sleeves that cover your arms.
✔️ Flattering for Every Shape – Many love how the ruching and cut make the top work even if it’s hard to find a flattering fit.
✔️ Sporty Floral Bottoms – Mid-rise shorts with playful prints give extra coverage and freedom to move.
✔️ Stays in Place When You Swim – The top and bottoms stay put in the water, so you can move freely without adjusting or worrying about loose fits.

Feel ready for waves, laps and lazy afternoons with Mariella — sporty comfort, modern coverage, and effortless style.

Size Chart

Size Bust (cm) Waist (cm) Hips (cm)
S 88 73 96
M 92 77 100
L 96 81 104
XL 100 85 108
2XL 104 89 112
3XL 108 93 116

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

OUR CUSTOMERS TELL IT BETTER THAN WE DO

I was so nervous ordering online but this dress is even prettier in person. The layers are so flattering and it doesn't cling at all. I wore it to my granddaughter's birthday lunch and got so many compliments. Already thinking about ordering it in another color!

Carol M.

Finally a dress that looks elegant without being uncomfortable. I'm usually between sizes and the medium fit perfectly. The print is even more beautiful in person. Will definitely be ordering more from Nicole!

Sandra T.

I tried this dress on right in the store and immediately knew I had to have it. The colors are stunning in person. The staff was so sweet and the boutique itself is just darling. I'll definitely be back next time I'm in Nantucket!

Linda K.

I hesitated because I'm a larger size and wasn't sure how it would look, but this dress is absolutely gorgeous on me. The fabric is lightweight and perfect for our hot Arizona summers. I've already worn it twice this week and felt beautiful both times.

Barbara H.

These loafers are the most comfortable shoes I have owned in years. My feet don't hurt after a full day of walking and they still look so chic. The little jewel buckle gets compliments everywhere I go. Ordered a second pair in case they sell out!

Patricia W.

My package arrived so fast and was packaged so nicely. When I pulled this dress out of the bag I actually gasped, the colors are absolutely stunning. My daughter saw it and immediately asked where I ordered it. Will be shopping here again for sure!

Judith R.

I am 71 years old and a larger size and it is so hard to find clothes that feel age-appropriate but still stylish and elegant. This dress fits me beautifully and I feel like a million dollars wearing it. Thank you Nicole's, you have a customer for life!

Dorothy S.

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SOME FIGHTS START WITH A MOTHER, A DAUGHTER, AND TEN YEARS OF LOVE.

When we opened Nicole's Coastal Boutique, we had one dream — to create a coastal space where every woman felt beautiful, relaxed, and completely herself.

Because of you, that dream became ten years of real life.

Now we're fighting to keep it alive.

Nicole's Coastal Boutique is holding its biggest sale ever — not to say goodbye, but to stay open. Same care. Same quality. Same intention behind every single piece.

Just prices we've never offered before.

This is our revival. And we need you.

Back to Swimwears

Frequently Asked Questions

Yes only today we offer free U.S. shipping on all orders. No hidden fees, no surprises at checkout. You'll see the full breakdown before you pay

Each product page includes a detailed size chart to help you find your perfect fit. We always recommend comparing the chart to a similar item you already own.

If you’re in between sizes, we generally recommend sizing up for the most comfortable fit. Still unsure? Our support team is happy to help you choose the right size!

Orders are typically processed within 3 business days after being placed.

Once your order is confirmed, you will receive an email with your order number. To track your order, simply visit our order tracking page and enter your order number or email address.

You can return items within 30 calendar days of receiving them.

  • Return shipping costs are the buyer’s responsibility.
  • Approved refunds will be issued to your original payment method.

If you experience any issues or have questions, visit our contact page to connect with our support team. We’re here to assist you promptly.

FREE SHIPPING WITHIN THE U.S.

Free shipping on every order across the U.S. this week only. We’ll deliver straight to your door, safely and without extra cost.

30-DAY MONEY-BACK GUARANTEE

Shop with confidence. Every order comes with a 30-day money back guarantee, so you can try us risk-free.

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.

Free shipping on every order across the U.S. this week only. We’ll deliver straight to your door, safely and without extra cost.

30-DAY MONEY-BACK GUARANTEE

Shop with confidence. Every order comes with a 30-day money back guarantee, so you can try us risk-free.

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.