Black Long Sleeve Open Back Girls Swimsuit
Black Long Sleeve Open Back Girls Swimsuit
She Wants to Feel Grown Up. You Want Her to Stay a Kid a Little Longer.
Fernleigh Avenue girls swimwear is created for both.
Model Is Wearing Women's Size 6w, Under Bust 71cm, Bust 83cm, Hips 85cm, Torso Length 63, Waist 70cm
Outgrown Children's Sizes? View Women's Sizes Here
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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.
Black Teen Swimwear With Long Sleeves & Secure Coverage
Meet the Black Long Sleeve Open Back Swimsuit, timeless teen swimwear designed to give growing girls confidence, comfort and dependable coverage. Combining protective long sleeves with Fernleigh Avenue’s signature open back, this one-piece offers a sporty, age-appropriate style she will feel good wearing.
Made from premium eco-friendly fabric, this black swimsuit features UPF 50+ sun protection and a double-layered body for comfortable, worry-free wear at the beach or pool.
🌊 Features & Benefits
✔️ Classic Black Colourway
✔️ Signature Open Back Design
✔️ Long Sleeves for Additional Sun Coverage
✔️ UPF 50+ Sun Protection
✔️ Chlorine-Resistant, Eco-Friendly Fabric
✔️ Removable Breast Modesty Padding in Sizes 12–16
✔️ Double-Layered Body for Coverage and Comfort
✔️ Teen-Approved Fit and Parent-Trusted Coverage
✔️ Also available in Crop Bikini and Sleeveless
✔️ Also available in women’s sizes 6W, 8W, 10W and 12W. View the women’s sizes in black teen swimwear here
Please visit our sizing chart for measurements and help choosing the best fit.
Stylish & Practical Teen Swimwear
This long sleeve swimsuit is designed for swimming, surfing and active beach days while helping growing girls feel comfortably covered. The open back gives the classic black design a modern, sporty finish, while the one-piece silhouette stays secure during movement.
The long sleeves offer additional coverage from the sun, making this teen swimsuit ideal for beach holidays, swimming lessons, water sports and long summer days outdoors.
✨ Protective teen swimwear without compromising on style.
🌞 Premium Fabric for Real Summer Adventures
This teen swimwear is made from durable, eco-conscious fabric with built-in UPF 50+ sun protection. Its chlorine-resistant material is designed for regular wear at the pool and beach.
The body is double-layered for dependable coverage and comfort, while the sleeves remain lightweight and flexible for easy movement. Removable breast modesty padding in sizes 12, 14 and 16 gives developing girls additional coverage, support and confidence when they want it.
💛 Black Teen Swimwear Designed for Growing Girls
The Black Long Sleeve Open Back Swimsuit combines additional sun coverage with a stylish open back and secure one-piece fit. Practical, supportive and easy to move in, it is made for girls who want to swim, play and enjoy summer without constantly adjusting their bathers.
Finally, black teen swimwear designed specifically for the in-between years.


- 5 stars: 1685 (98%)
- 4 stars: 18 (1%)
- 3 stars: 8 (0%)
- 2 stars: 4 (0%)
- 1 star: 3 (0%)
Beautiful cossie, quality is outstanding, my granddaughter is getting plenty of comments of how stunning she looks in it.
Gorgeous products, and great customer service! I purchased three pairs of swimmers for three of my daughters, only one pair didn’t fit. I emailed customer service to ask about returning it and she sent me a postage label so I didn’t have to pay for postage! I was refunded as soon as they got the swimmers back.
We love the swimmers. They look so beautiful ❤️
This swimwear for my daughter’s is a game changer. Quality material, excellent design around fit and coverage, and the girls just love the look! It’s hard at times to satisfy a teenager and these suits do just that. Add in that the owner “Amy” cares about her product, and is amazing with her customers. We are repeat customers from the other side of the world in Canada.
Hi Steve,
Thank you so much for sharing your heartfelt story. We're truly touched to hear how our swimsuits have made such a positive difference for Sarah. Your kind words motivate me to keep designing with love and care. We look forward to welcoming you back soon!
Warm regards,
Amy
beautiful suit and fully lined top half which is great for girls. The fit is a tad small, I bought my daughter (typical 10/12) a size 12 and it fits great. The details are fantastic and she loves it. However the colors are a bit muted. The pink it not a hot pink like the pictures, nor is the blue. I was a bit disappointed in the colors but the overall suit is great.
Hi there! Thank you for your lovely feedback. We're glad your daughter loves the suit and that it fits well. We appreciate your note about the colors and will keep it in mind for future updates. Thanks for shopping with Fernleigh Avenue!
From the print to the style this swim suit covers all the bases ! We were poolside and had SO many compliments about the really cool detail of the back. It was also stretchy and easy to get on. Super cute suit
Hi Carlie! We're so glad you loved the Pippa Open Back Girls Swimwear and that it received so many compliments. Thanks for sharing your experience happy swimming! 🌟
These swimmers are beautiful! they look great on my daughter and the quality is amazing. Only thing she would have preferred no frill but they don't come without the frill in the size 8.
Incredible colour and fit. So much flexibility with the open back for a longer torso. My only request would be to please make the sleeve length longer, as it reaches to just above where a watch would sit on the wrist.
Excellent quality, beautiful material and true to size.
Fantastic swimsuit. Great fit and looks amazing
We ordered the swimwear as we needed something that was more grown up than what we could get at local shops but still covered where we felt it important to be covered, this swimwear was the perfect compromise between a tween and her dad. Furthermore when there was a delay with shipping the customer service we experienced was above and beyond.
Not only would I recommend to friends we will be repurchasing, both because of the service and because this is a bather she can be in for quite sometime and it be "enough" for her and approved by her dad !
So glad we found this brand.
so beautiful on and very good quality and fit
beautiful swimmers, great quality and fit
Quick delivery. Gorgeous swimmers. Fits really well.
Beautiful & fits perfectly. Colour does not fade over time, this is the 2nd one I have bought my daughter, the first one lasted over 18 months until it was too small for her and it is still in excellent condition so I’m keeping it for her little sister to grow into. Excellent quality!
These bathers are such a great fit. Look super cute on, great protection from the sun with the long sleeves. Material is thick and great quality!
The quality is amazing! My daughter loved them.
I bought this for my daughter's 6th birthday. She loves bikini's but I wanted something that was still practical for play as she's very active. She loved this set. The colours are beautiful, the strappy back is pretty and adds a special difference to the swimwear. She's quite tall and slim so I bought a size 5 and it fitted well. I had wished I could get the frill on her bottoms but it wasn't available at the time, keeps it young and child like which I had liked. Overall, beautiful, well-made swimwear.
this one isn't as bright in person, but still amazing quality and beautiful big girl swimmers
stunning. first picture that drew me to the website and it is juat as beautiful in person
absolutely gorgeous swimwear. my daughter GASPED when she saw this 🩷
Such a stunning colour, beautiful design and age appropriate for my 9 year old. Thank you
Such beautiful Bathers, perfect fit and coverage. My 9 year old loves them. Thank you, highly recommended
Beautiful swimwear, have a few different pieces for my 4 year old granddaughter now buying also for my 18 month old granddaughter. Always get comments when they are wearing them. Don't fade in chlorine like other swimwear and look gorgeous on and perfect fit
Hi Renee, thank you so much for your lovely review! We're thrilled to hear your granddaughters love the swimwear and that they hold up well in the pool. We appreciate your support and hope they continue to enjoy their swims! Best, Fernleigh Avenue
First you designed swimsuits that are truly amazing. We have purchased quite a few for my oldest daughter. Now I have to thank you once again, for producing the same beautiful suits, in sizes that my younger daughter can enjoy.
If you could have seen my younger daughter a year ago, with tears in her eyes when the suits I bought her didn’t fit. It saddened me but I told her we were all built different. Not something we can control. She is big boned. Not fat. It still was sad.
Then you mentioned you were considering larger sizes. I really hoped it would come to reality. Thank you Amy, for taking the chance on larger sizes. If you could have seen Sarah’s smile today when she tried on the two suits, and they fit her perfectly. She is only 15, and times are hard as a teen. Today, that was not even in her thoughts. She was above the world, feeling beautiful, with no concerns around fit. It’s a small win, one that the smile said everything.
I wish you the best and hope you continue your great work. We will be back for sure. Again thank you Amy. From Northern Canada! Steve
Hi Steve,
Thank you so much for sharing your heartfelt story. We're truly touched to hear how our swimsuits have made such a positive difference for Sarah. Your kind words motivate me to keep designing with love and care. We look forward to welcoming you back soon!
Warm regards,
Amy
These swimmers are absolutely beautiful. My daughter is 13 and I ordered the size 6 ladies. They fit her perfectly she said she feels so comfortable. The cut of the pattern and the double lining is perfect for a fashionable cute but modest swimsuit.
Hi Lena, we're so happy to hear your daughter loves the Amberley Open Back Girls Bathers! Thanks for sharing your lovely feedback. We hope she enjoys many happy days in her new swimsuit!
Beautifully designed and made with high quality material. Absolutely stunning!
Hi Sarah! Thank you so much for your lovely words. We're delighted you love the Bella Open Back Girls Swim Shorts Set. We appreciate your support!
My daughter loves her new bathers and it’s a perfect fit! I was hesitant to buy something without her trying it on, but so glad I did. Will definitely buy more!
Hi Natasha, we're so happy to hear your daughter loves her new swimwear! Thank you for trusting us and for your lovely feedback
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.