While we start to see a variety of different swimsuits make their appearance in the summer, finding one appropriate for your tween girl can be tricky.

The most challenging thing you will face when shopping for a swimsuit for your tween is that many of the swimsuits available are not very modest. It seems like each year new styles cover less and less.

Something else that makes it challenging is that your tween is getting older and independent. She’s starting to make her own clothing choices and may want something a little more revealing.

Luckily, we’ve gathered some of the best modest swimsuits for teens. They feature protection and coverage from the sun, while remaining stylish.

Here are out favorite picks for summer 2026:

15 Best Swimsuits for Tween Girls

Disclosures: We are participants in the Amazon Associates Program and other affiliate programs that earn us a commission if a qualifying purchase is made.

Jasmine Beach Sport Swimsuit

Made with a pull-on closure, this sporty swimsuit provides UPF 50+ protection for your tween and is lined on both the front and the back.

Find it on Amazon

Hurley One Piece

A floral one-piece suit that has thin straps for comfort, this Hurley swimsuit also provides your tween protection as she enjoys some outdoor fun.

Find it on Amazon

Graphic Tankini Swim Set

The top of this tankini set has a V-neckline and a bold graphic top with spaghetti straps. The straps on the back are crisscrossed, making them comfortable.

Find it on Shop Justice

Reversible Cut-Out One-Piece

Your tween can choose which style to go with anytime. This swimsuit features a pattern on one side and a single color on the opposite side.

It’s also made from recycled materials and stretchy material for comfort.

Find it on Shop Justice

Rash Guard Swimsuit

Under Armour Girl’s Racer

Lightweight and stretchy, the racerback design of this one-piece makes it more comfortable for your tween to enjoy the sport of swimming.

Find it on Amazon

Floral Ruffle Suit

Pattern Ruffle Tankini

The top of this tween swimsuit features frilly ruffles and a colorful pattern for summer.

It’s tankini style with self-tie spaghetti straps so it’ll be comfortable as your tween swims and enjoys water sports. 

Find it on Shop Justice

Long Sleeve Swimsuit

Featuring a long sleeve top design, this bathing suit is a two-piece long sleeve shirt and short set that protects from the sun as your tween enjoys the water.

Find it on Amazon

Vogseek Girl’s 3 Piece Swimsuits 

Looking for a pre-teen bikini that’s not too revealing? This 3-piece bikini set can be just the answer.

Available in several fun and feminine patterns, the beach skirt is the perfect way to retain a little modesty while still carrying off the cute bikini look.

Find it on Amazon

Graphic Racerback

A scoop neckline and multicolor racerback straps that are two-wide, along with the colorful graphic front make this tween swimsuit a fun choice.

Find it on Shop Justice

Mermaid Design One Piece

Made from a quick-dry material, this sparkly and fun mermaid scale-designed swimsuit has an adjustable strap so your tween can be comfortable both in and out of the water.

Find it on Amazon

Short Sleeve Swim Set

Durable and stretchy, this two-piece suit features a short sleeve top and shorts so your tween can play in the water comfortably and be protected from harmful sun rays while enjoying her time in the water.

Find it on Amazon

Tie-Back Rash Guard Swimsuit

This long sleeve rash guard suit features a color block design around the arms and the sides and has an open back tie with a bow to add some fun to the suit.

Find it on Shop Justice

Roxy One-Piece Swimsuit

Featuring a fun throwback design, this one-piece swimsuit is mostly made from cotton and is fully lined.

It also features a keyhole detail on the front of the suit and spaghetti straps.

Find it on Amazon

We hope you’ve found something in this selection that will give your young girl the sun protection and modesty she deserves while still allowing her some fun in the sun this summer.

You may also be interested to pop over and check out our guide to the best period swimwear for tween girls, opening up many options to girls who are mensurating to still enjoy their tie around water based activities.

Further Summer Reading For Tween Parents

You may also want to check out:

• Best pool toys for tweens this summer
• How to host the perfect tween pool party
• Exciting and fun activities for your tweens to enjoy outdoors this summer

The post Best Swimsuits For Tweens – Ideal For Girls Aged 9 to 12-Year-Olds appeared first on Tween Parent | Family Lifestyle Blog.

Now that your tween is maturing, it is time you introduce your tween to period panties in case she experiences her first period before her teens. Most times, we stand by the saying “ignorance is bliss,” but not when it comes to your tween getting her first period.

Annually, we dispose of many menstrual products in the trash bin resulting in lots of plastic pollution, some which take 500 to 800 years to decompose ⁽¹⁾. We’re sure no one wants to be a part of the problem, and that’s why it’s essential to familiarize yourself with the best period panties for your tween as an alternative menstrual solution.

What are period panties?

Period panties are the latest invention for helping females manage the days of the month they most dread because of how daunting it can be, but not when you have the best period pants.

Period pants are built using the best technology. They contain a built-in pad to prevent any leakages and are made out of fabric that will last your tween a long while as they are reusable.

The fabric of period panties is an odor-eliminating fabric and super comfortable, making them the best period panties for your tween.

Since period pants contain padding to prevent absorbing any blood, you can always advise your tween to wear them as they are or as a backup if they have a heavy flow and are afraid of leakages.

Why choose period pants for tweens?

Since your lovely girl is crossing this line to womanhood, I’m sure period panties are the best way to introduce them to menstrual products since they are simple, easy to use, and comfortable.

According to research, the average woman goes through about 240 tampons a year, costing approximately $50. That is a lot of money to spend on one tween girl, making it better to opt for period panties that are reusable and will last them a couple of years.

Period panties for girls are the best way to go because it also helps save the planet. Using disposable menstrual products tends to cause a lot of plastic pollution in the environment, and you can prevent your tween from being a part of this by getting period panties for tweens.

Some more advantages for getting period panties for your tween include;

• Period pants are very convenient; unlike other menstrual products like tampons and pads, all you have to do is grab them and wear them.
• Period panties are discrete; it is always nerve-wracking when you can’t stop thinking that the outline of pads is visible for people who use pads. But with period panties, your tween won’t have to worry about all that.
• Period panties offer you peace of mind. Let’s say you wear them with a tampon or pad. You won’t have to worry about leakages since the period panty will take off those leaks.

Features to look out for in good tween period pants

When shopping for period pants for your tween, it can be hard to determine which ones are the best for your girl. You should look for features like:

• Light: Period underwear for tweens should be light to prevent them from feeling they are more of a burden on.
• High-absorbency: Since your tween will want to wear these without any other menstrual products, it is best to find period panties for tweens that are highly absorbent to keep them feeling safe throughout the day when wearing them.
• Comfortable: It doesn’t matter how good the period panties you’re getting your girl are; if they aren’t comfortable, they won’t do the trick. Menstruating is already an uncomfortable situation; you don’t need to add on uncomfortable panties.
• More coverage: The best period pants for tweens are supposed to have a wide coverage ensuring that they don’t leak to clothes worn or at the back. If they’re made with this much coverage, your tween can move around in them for as long as possible without worrying about any embarrassing moments that could occur.

Best period panties for tweens

Many companies sell period panties for adults, but it can be a little hard to come across the best period panties for tweens. Here are some of the best period panties we’ve found for your girl.

Disclosures: We are participants in the Amazon Associates Program and other affiliate programs that earn us a commission if a qualifying purchase is made.

Evawear Period Panties

These period panties are great for your tween. It has full protection in the front and back. The level of absorbency of this panty is equal to what two tampons can absorb, making it an excellent option for your tween girl.

The panty material is breathable and highly absorbent in all areas keeping your tween dry during her periods. The intended purpose of this period panty is for use without tampons or pads hence very absorbent.

Find it on Amazon

Thinx BTWN Teen Period Underwear

These period underwear are great for your tween; they don’t allow any leaks and stains because the material keeps your tween girl safe for longer.

Thinx BTWN is meant for wear without other menstrual products, so it sits leak-free and is highly absorbent. Your girl will also be safe since it’s made from organic cotton, making it super comfortable.

It also repels odor preventing your teen from being self-aware when on their period. The best feature of them all is that they are machine wash safe which is very convenient.

Find it on Amazon

Nalwort Teen Girls Period Underwear

These period panties for tweens are made from organic cotton giving your girl comfort and a bit of absorption.

These period panties, unlike the others, aren’t a replacement for menstrual products and are best paired with tampons or pads. But even if they leak, your girl won’t be worried about embarrassment as they will absorb any leaks.

Find it on Amazon

ModiBodi Hispter BoyShort

You tween girl will love these boyshorts period panties. They are comfortable and can handle medium to moderate flow. Meaning it can handle what 2-3 tampons can absorb. Due to its high absorbency, it will leave your tween feeling dry and comfortable.

These boyshorts are meant as a replacement for tampons and pads. It is built using high-tech, making it ultra-absorbent; it can fight stains and odor.

It is best for your tween as it offers comfort and prevents them from feeling self-conscious when menstruating. To add a cherry on top of the cake, these boyshorts come in an attractive color, which your girly tween will love.

Find it on Modibodi

Smooth Period Boyshort Panty

These boyshorts panties by Victoria’s Secret have three times the typical leak protection. You can buy these as a set of three, and you won’t need to buy anymore for quite a while. They are made out of stretchy and smooth fabric, making them comfortable.

When it comes to leaks, your tween doesn’t have to worry about them since these boyshorts absorb what three tampons are meant to absorb. Which means they can stay with them for long without needing to worry. They also have full-back coverage, allowing one to sleep in them without worrying about leakages.

The best part of these is that you can wash them in your machine, giving your tween fewer things to worry about during her menstrual period.

Find it at Victoria’s Secret

What about swimming on your period?

One of the biggest fears and concerns our newly mensturating girls might have is what to do when they have a swimming lesson coming up, or perhaps a pool party when they’ll be on their period?

Whilst period panties are great on dry land, swimming can bring up a whole new raft of concerns when it comes to effectively managing your girl’s period.

Many of the leading period pant companies, such as Ruby Love and Modi Bodi, have also expanded their ranges to include period swimwear. We have a much more detailed guide over here to the best type of period swimwear for pre-teen girls.

Further Preparations for Your Tween’s Period

Your girl’s underwear certainly isn’t the only thing she needs to think about when its time her period arrives. It can be an exciting coming of age but also immensely daunting experience for your tween girl.

To help you and your daughter best prepare, you may also want to check out our guide to creating a first period kit. Here, we talk you through exactly how to prepare your daughter with the comfort items she needs and what items to include. We also talk through period trackers for tweens, helping her predict for when to be prepared.

If your tween would still prefer pads for her period, we have a detailed guide over here to the best beginner period pads, along with guidance on starting your tween girl using tampons. As with some of the brands we’ve described above, you may want to use a combination of pads, tampons and appropriate period underwear until she’s comfortable with her choice.

Over to you parents! What has your experience been like equipping your girls with period underwear. Do you find period panties work best, or does your tween still prefer pads?

The post Should I Buy Period Underwear For My Tween? Period Pants For 9 to 12-Year-Olds Compared appeared first on Tween Parent | Family Lifestyle Blog.