Betty | Waveside Two-Piece Tankini
Betty | Waveside Two-Piece Tankini
Betty | Waveside Two-Piece Tankini
Betty | Waveside Two-Piece Tankini
Betty | Waveside Two-Piece Tankini
Betty | Waveside Two-Piece Tankini
Betty | Waveside Two-Piece Tankini
Betty | Waveside Two-Piece Tankini
Betty | Waveside Two-Piece Tankini
Betty | Waveside Two-Piece Tankini
Betty | Waveside Two-Piece Tankini
Betty | Waveside Two-Piece Tankini

Betty | Waveside Two-Piece Tankini

Regular price Sale price £75.00 £29.95 Save 60%
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50% OFF

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SUMMER SALE: Stock is limited and popular sizes are selling quickly. If you can still click ‘Add to cart’, your size is still available.

THE TANKINI THAT WORKS FOR YOU, NOT AGAINST YOU

A two-piece that genuinely solves the problems of most swimwear. The built-in shelf bra with removable padded cups removes the need for a separate top, while tummy-control boyshorts provide a smooth, confident silhouette whether you're in the water or reclining on the beach. Braided elastic straps sit secure all day, and the coverage levels mean you can move freely without constant adjustment. Nine prints, six sizes — made to be the only swimwear set you reach for all summer.

WHY WOMEN LOVE IT

  • Built-In Shelf Bra with Removable Cups: Integrated support means you never have to coordinate a separate swimsuit top — the cups are removable for a customised level of coverage and shape that works exactly as you want it to.
  • Tummy-Control Boyshorts: The fitted boyshort cut provides a smoothing, secure fit without restriction, keeping everything in place whether you're swimming, walking the beach, or sitting poolside — practical coverage with a flattering silhouette.
  • Braided Elastic Straps: Adjustable braided straps distribute weight evenly across the shoulders and hold their shape and position throughout the day, so the fit you put on in the morning is the same fit you have by afternoon.
  • Modest, Versatile Coverage: Designed to sit at the waist and provide comfortable coverage that's appropriate for beach, pool, or holiday — the kind of swimwear that works in any setting without compromising your confidence or your style.
  • Nine Bold Prints: From tropical palm prints and fresh florals to classic navy geometric and earthy camo — a wide palette of prints means there's a Waveside Tankini for every mood and every summer occasion.

We offer free shipping within the United Kingdom on all orders, delivered with Royal Mail. Your order is important to us, and we are here to make sure it reaches you safely and without any extra cost.

Your satisfaction is our priority. We take pride in the quality of our pieces and believe you will love them. If for any reason the item is not quite right, you can return your order within 30 days of receipt for a full refund. Please review our return policy for more information.

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The Hartley Sisters

Some dreams start with two sisters and a crazy idea. ✨

When we launched The Hartley Sisters, we had one dream — to create a place where every woman could find something that truly feels like her. Because of you, that dream grew bigger than we ever imagined.

This year, we're celebrating our very first anniversary. 🤍

To say thank you, we're running our Hartley Sisters Summer Sale with discounts of up to 60%. Our little way of saying thank you for supporting two sisters building something from the heart.

WHAT CUSTOMERS SAY ABOUT US

★★★★★

I discovered The Hartley Sisters this summer and I haven't stopped shopping here since. The summer dresses are gorgeous, beautiful prints, lovely fabrics and the fit is just perfect.

Sophie M.
London
★★★★★

What I love most about The Hartley Sisters is that it doesn't feel like shopping from a faceless brand. Clara and Grace clearly have an amazing eye for summer fashion!

Emma R.
Manchester
★★★★★

I was looking for something special for a summer wedding and The Hartley Sisters delivered beyond my expectations. The collection is fresh, fun and so wearable!

Charlotte W.
Edinburgh
★★★★

Really lovely selection of summer clothing, the colours and styles are right on trend but still feel timeless. Delivery was quick and everything was packaged beautifully.

Hannah B.
Bristol
★★★★

Such a sweet concept, two sisters building something together and it really shows in how they've curated the collection. The summer tops and dresses are gorgeous and great value for the quality.

Lucy T.
Birmingham

Free delivery

We offer free shipping incl. Track & Trace in the UK

30-DAY MONEY-BACK GUARANTEE

Not satisfied? Return any item within 30 days for your money back

CUSTOMER SERVICE

If you have any questions, feedback, or concerns about your order, don't worry! Our customer service team is here to assist you.