Age appropriate bikinis for <a href=

As a Mum to a teenage girl, finding suitable (age appropriate) bikinis for teen girls is becoming an annual palaver. 

Like many girls her age, Flea loves swimming, and being on the beach. But it’s increasingly important to Flea that her swimwear looks just right.

My girl used to be happy with board shorts and a rash vest I’d choose from somewhere like Boden. These days, it’s got to be a bikini, and she’s ridiculously particular about designs. But then – so am I.

Flea is still in her teens, she’s not 20. She doesn’t need teeny triangles or something that makes her look five years older than she is. She needs strong straps and decent coverage.

Because when you’re a young girl, nothing’s more inhibiting than worrying you might inadvertently flash some strangers on the beach. And when you’re still at school, your swimwear shouldn’t involve the need to shave your bikini line (imho).

Last summer, after a lot (seriously, a LOT) of hunting we found the crop top bikini at the top of this page. It was in the girls’ range at River Island. Flea thought it was really cute, and I was also happy with the coverage. There are loads of designs available in this year’s collection.

But River Island only provides these suits in sizes up to 11-12.

Newsflash, River Island: just because my girl is over 12, doesn’t mean I want her wearing these items…

Honestly, it’s a similar story at a lot of my go-to retailers. Either the girls’ swimwear stops at age 12, or is too revealing, or it goes too far the other way.  No 13-year-old that I know wants to be wearing the same as the 5-year-old who’s building a sandcastle down the beach.

Okay, enough complaining.

We’ve put in the hard work so you don’t have to. Here are 12 fab bikinis for teen girls. We reckon they’re cool enough for the most discerning teen. But they’re practical and modest enough to please parents, too. Please note some of these links are affiliate links, meaning I’ll make a small commission if you click through and buy.

12 of the Best Bikinis for Teen Girls & Tweens

hollister bikini top for girls

Hollister Girls’ Crop Top Bikini, £11

This top is really quite modest, and there are a range of bottoms to choose to match if you don’t like the suggested style. It’s a great bikini option for a teen girl. It’s currently reduced from £26 to £11 – bargain!

It’s simple red style is classic and definitely gets teen approval in our house.


best bikini tween girls

Superdry, High Neck Bikini, £12.50

Not gonna lie, this is a bargain and is selling out fast. This colourful bikini with strong navy and pink patern won’t go see-through in the water, and is great for darker skin tones.

Even better, it’s on sale and is currently only £11 to buy online from Superdry. Perfect for the tween in your family. Order it here.


H&M black sports bikini for teen

H&M Sports Bikini, £14.99

Looking for a sporty bikini for a teen girl?

I love this design in classic black for older teen girls, and Flea’s a fan too. And you can’t really argue with the price, can you? There are matching bottoms available in the women’s section and I think this is a great buy. Also if this one isn’t quite right, remember that H&M’s children’s bikini range goes up to age 14+ making it ideal for younger teens. Get it here.

teen girl bikini


New Look, Cali Girls Bikini, £12.99

New Look is another retailer who offers kids’ swimwear up to 15, and this season there’s once again a great range of bikinis for teen girls. I like this blue bikini because it’s a really fashionable pattern (that mimics more expensive designer styles) but isn’t TOO revealing. The bottoms are fairly substantial for younger girls. This one is one of Flea’s favourites this season.


new look sports bikini for teens

H&M, Sports Bikini, £14.99

Another great teen bikini buy from H&M, this sporty top is a gorgeous black option for the summer holidays – and it’s available in two colours! I love this bikini for the wide straps, comfy elastication and fully lined fabric, making it ideal for tweens who want to wear a bikini, but need to be age-appropriate.


next tankini for tweens

NEXT, Tankini bikini, from £14

I don’t often see tankini designs that work well for all ages, but I think this tankini print from Next comes pretty close. The top offers fantastic coverage, meaning you’re less worried about sun exposure, and the bottoms are fully lined and not cut too high. It’s available from age 6 to 17, and I think is great value. Buy one here.


Sunuva, Crop Halter Bikini, £42

best bikini for tweens sunuva

Sunuva actually has a section on its site devoted to young teens aged 9-14, with loads of mix and match options including bikinis, shorts, rash vests and crop rash vests. Check out the range here.

Everything has 50+ UVA protection, which is always a bonus in our fair-skinned family. Don’t forget to sign up to the mailing list for 20% off. I would say, 100% this is one of the best range of bikinis for teen girls that I’ve found. I love that Flea can swim on the beach, add a pair of shorts, and be instantly ready to pop for lunch somewhere.

One thing to note – the teen bikini tops (as opposed to the crop tops and halters) are teeny tiny triangle things and won’t cover up your teen’s chest if they’re anything above an A-Cup. I had to confiscate Flea’s before she had a chance to cause a public incident!


matalan bikini 9 to 16

Matalan, Candy Bikini, £10

This candy print bikini for teens is available in ages 9-16 and comes in three colours – black, pink and khaki. Each has a little candy stripe trim that adds a bit of fun to the design.

It’s great value and I think a simple classic that will suit most picky teens! Check out the range here.


Roxy Wildness Crop Bikini Top, £36

best bikinis for teens and tweens 2021

Now, this isn’t the cheapest bikini top on the list but if you’re losing hope at finding a bikini that your teen will want to wear and that you’ll be happy with, this navy bikini crop top from Roxy might be worth a look. It’s got that summer festival/surf vibe that my teen loves, while also offering a robust option for swimming and playing in the sea. Available from amazon here.



tie die crop bikini teens

BMJL High Waisted Crop Top Bikini,

This swim set works well for teens and is available in size 10-18. The bottoms have a high waist which is great for keeping teens covered, and the crop top is secure and comes with lining and a removable padding, depending on their preference. The tie design is also really pretty for summer,  and got the teen thumbs up in our house. It’s available from Amazon here.


monsoon crop bikini age 7 to 15

Monsoon, Storm Bikini, £15

Honestly, I just love the design of this bikini from Monsoon. It’s colourful, but sophisticated. Made entirely from sustainable fabrics, it’s available in sizes from age 7 to 15, making it perfect for tweens and teens alike. Check out the Monsoon site here.

There you have it! Our guide to the best bikinis for teens this summer. Let us know your favourites in the comments!




Sally is a full-time blogger and founder of the Tots100, Trips100, Foodies100 and HIBS100 communities, along with the MAD Blog Awards. She spends a bit too much time on the Internet. She's also a very happy Mum to Flea, the world's coolest ten year old.