• A woman wearing a long-sleeve high-neck teen swimwear, pink, and orange floral pattern, standing in front of a rocky outdoor background.
  • A woman wearing a pink floral long-sleeve girls bathers and matching bottoms, photographed outdoors in front of a rocky natural setting. She is turned away from the camera, showing the back of the outfit with multiple crisscross cutout straps.
  • A woman posing on a rocky beach under a natural rock overhang, wearing a long-sleeve high-neck girls bathers with a vibrant pink, purple, and orange floral pattern.
  • A woman wearing a pink and orange floral long-sleeve teen swimsuit stands under a large rock formation on a beach, with the ocean and cloudy sky in the background.
  • A woman wearing a pink and purple floral long-sleeve girls bathers stands in front of a rocky beach cave with the ocean and sky visible in the background.
  • A woman posing outdoors in front of a rocky cave wall, wearing a pink floral girls swimwear
  • Two girls wearing matching pink and orange floral long-sleeve girls swimsuit shirts on a rocky beach with the ocean in the background.
  • Two young girls wearing matching pink floral girls bathers shirts stand on a sandy beach under a large rock formation with bright sunlight shining through the cave opening.
  • Two young girls wearing matching pink floral long-sleeve girls swimwear and shorts sets, standing on a sandy beach with large rocks and green cliffs in the background.
  • Two women standing on a beach from behind, wearing matching pink floral teen swimwear sets with crisscross back straps.
  • A woman wearing a pink floral long-sleeve teen swimwear and matching bottoms, photographed outdoors under a rocky cave opening. She is turned to show the back of the top, which features crisscross cutout straps.
  • Two women modeling matching pink floral long-sleeve girls swimwear sets on a rocky beach. The woman on the left wears a one-piece swimsuit, and the woman on the right wears a matching two-piece swimsuit with an open crisscross back.
  • Two young women standing on a rocky beach wearing matching long-sleeve pink and orange floral swimwear
  • Two girls wearing matching pink floral swimwear sets, standing on a sandy beach with large rocks and green cliffs in the background.
  • Two women seen from behind wearing matching pink floral long-sleeve girls swimsuits with crisscross back straps, standing on a beach with ocean waves in the background.
  • A young girl wearing a pink and orange floral long-sleeve swim dress stands on a rocky beach with the ocean in the background, while another girl in a matching swimsuit is blurred in the foreground.
  • Two girls wearing matching pink and orange floral long-sleeve girls bathers on a rocky beach with the ocean in the background.
  • Two girls wearing matching pink floral long-sleeve swimsuits pose on rocks at the beach, with the ocean and shoreline in the background.
  • Two young girls wearing matching pink floral long-sleeve teen swimwear stand barefoot on a rocky beach with the ocean and sky in the background.
  • Two girls standing on a beach from behind, wearing matching pink floral long-sleeve teen swimsuits with crisscross back straps, with a rocky coastline and ocean in the background.
  • Two young girls wearing matching pink floral long-sleeve tween swimwear standing on a sandy beach in front of a large rock formation.
  • A woman wearing a long-sleeve high-neck girls swimsuit with a pink, purple, and orange tie-dye pattern, posing in front of a rocky outdoor background.
  • A woman wearing a pink long-sleeve swimsuit with a colorful floral pattern stands on a beach staircase with the ocean and rocks in the background.
  • A woman viewed from behind wearing a pink floral long-sleeve swim top and matching bottoms, standing on a beach with the ocean and shoreline in the background.
  • A woman wearing a pink floral long-sleeve bodysuit stands outdoors on a grassy beachside path with the ocean and cloudy sky in the background.
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Marli Open Back Girls Bathers | Women's Sizes

Marli Open Back Girls Bathers | Women's Sizes

She Wants to Feel Grown Up. You Want Her to Stay a Kid a Little Longer.

Fernleigh Avenue girls swimwear is created for both.

$89.95 AUD
$89.95 AUD
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  • Buy any 2 Swimsuits 10% Off
  • Buy any 3 Swimsuits 15% Off
  • Buy any 4 Swimsuits 20% Off

Age-appropriate, comfortable, and stylish girls swimwear- finally something you both agree on. Double-layered fabric and premium stretch mean more beach days, fewer replacements.

Teen Swimwear Designed for Growing Girls

Meet the Marli Open Back Teen Swimwear, created for growing girls who have outgrown children's sizing but still want swimwear that feels secure, comfortable and age appropriate. Available in Women's Sizes 6, 8, 10 and 12, Marli combines a sophisticated floral print with Fernleigh Avenue's signature open cross-back design.

Growing girls deserve swimwear that grows with them. That's why we've expanded our collection into Women's Sizes 6–12. Our extended sizing helps older tweens and teens continue wearing swimwear created specifically for their changing bodies.

Crafted from premium eco-friendly fabric, this teen swimwear offers UPF 50+ sun protection and excellent chlorine resistance. The double-layered construction provides comfort and coverage while remaining lightweight and flexible.

Please visit our Sizing Chart for measurements.

🖤 Why Girls Love Marli Teen Swimwear

  • UPF 50+ Sun Protection
  • Chlorine-Resistant Fabric
  • Signature Open Cross-Back Design
  • Double-Layered Construction
  • True-to-Size Fit
  • Premium Eco-Friendly Fabric
  • Exclusive Marli Floral Print
  • Removable Breast Modesty Padding
  • Designed in Australia
  • Available in Women's Sizes 6, 8, 10 and 12

Teen Swimwear That Keeps Up With Every Adventure

The Marli Open Back has been designed for active girls who love spending time in and around the water. The supportive cross-back design stays comfortably in place while swimming, surfing or relaxing by the pool.

Marli's elegant floral print creates a timeless style that feels more grown up while remaining age appropriate. Every feature has been carefully designed to help girls feel confident during the transition into Women's Sizes 6–12.

Unlike many traditional women's swimsuits, Marli has been developed with growing girls in mind. It offers the support, coverage and comfort they need as their bodies change.

Whether she's heading to swimming lessons, beach holidays or weekends with friends, Marli teen swimwear is ready for every summer adventure.

✨ Order now and enjoy another summer of confident swimming.

🌸 Marli Print Also Available In

✔️ Girls Open Back One Piece Swimsuit Sizes 1-16
✔️ Girls Rash Top Set Sizes 1-12
✔️ Girl's Sleeveless One Piece Swimsuit Sizes 3-16

 

🖤 In Conclusion

The Marli Open Back Teen Swimwear combines premium performance with timeless style. Every detail has been thoughtfully designed to support growing girls through the in-between years.

With its secure open cross-back, UPF 50+ protection and eco-friendly construction, Marli delivers confidence, comfort and freedom to move.

✨ Order now and discover swimwear designed especially for growing girls.

If you love the Marli Print, be sure to explore the complete Marli Collection.

Visit our Knowledge Centre for expert advice on choosing supportive, age-appropriate swimwear for tweens and teens.

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  • Girls Swimwear
  • Girls Swimwear
Girls Swimwear

What Makes Fernleigh Avenue So Special

At Fernleigh Avenue, we prioritise quality, sustainability, and style by crafting our swimwear from eco-friendly materials with UPF 50+ sun protection.

Find More Key Features Here