Lift & Support

SmoothFit Bra

Low Rise & Stretch

SmoothFit Boyleg

Everyday Comfort

SmoothFit Thong

Moderate Coverage

SmoothFit Bikini Brief

Full Coverage

SmoothFit Full Brief

Classic Cut

Bikini Brief

Lounging

Body Short

Shop Mens

Thicker Legs

Boxer Brief

Thinner Legs

Trunk

Easy Access

Boxer Brief Fly

Longer For Activity

Boxer Brief Sport

Full Length

Long Johns

Ages 6 - 14

Junior Trunk

Shop Womens

Lift & Support

SmoothFit
Bra

Low Rise & Stretch

SmoothFit
Boyleg

Everyday Comfort

SmoothFit
Thong

Moderate Coverage

SmoothFit
Bikini Brief

Full Coverage

SmoothFit
Full Brief

Classic Cut

Bikini Brief

Lounging

Body Short

For Him

Shop Mens
Women's Starsign Underwear at Step One - Model:Sophie
Sophie is 172cm tall, 65cm waist, wearing a size XS
Women's Starsign Underwear at Step One - Model:Sophie
Sophie is 172cm tall, 65cm waist, wearing a size XS
Women's Starsign Underwear at Step One - Model:Sophie
Sophie is 172cm tall, 65cm waist, wearing a size XS
Women's Starsign Underwear at Step One - Model:Sophie
Sophie is 172cm tall, 65cm waist, wearing a size XS
Women's Starsign Underwear at Step One - Model:Sophie
Sophie is 172cm tall, 65cm waist, wearing a size XS
Women's Starsign Underwear at Step One - Model:Fabiana
Fabiana is 168cm tall, 83cm waist, wearing a size L
Women's Starsign Underwear at Step One - Model:Fabiana
Fabiana is 168cm tall, 83cm waist, wearing a size L
IN STOCK
X

30 Day First Pair Guarantee

We are so confident that you'll love your Step Ones...

We'll give you a FULL REFUND on your FIRST PAIR

If you don't like them for whatever reason

Bikini Brief
(491)

Price as low as £10.90 with packs!

Colour: Leo

Originals:
[EXP-A] Women's Bikini Brief - Tap Shoe - Bamboo Underwear - Model:Yolanda
[EXP-A] Women's Bikini Brief - Ahoy Sailor - Bamboo Underwear - Model:Yolanda
[EXP-A] Women's Bikini Brief - Butter Scotch - Bamboo Underwear - Model:Yolanda
Women's Bikini Brief - Forest - Bamboo Underwear
Women's Bikini Brief - Ice Melt
Limited Editions:
Women's Bikini Brief - Feelin' Lucky - Bamboo Underwear
Women's Bikini Brief - Love Covers - Bamboo Underwear
Women's Bikini Brief - Green Houndstooth
Women's Bikini Brief - Euro Streakers - Bamboo Underwear - Model:Sophie
Women's Starsign Underwear at Step One - Model:Sophie
Women's Bikini Brief - Virgo - Bamboo Underwear - Model:Sophie
Women's Bikini Brief - Libra - Bamboo Underwear - Model:Ashley H
Women's Bikini Brief - Halloween 2024 - Bamboo Underwear - Model:Sophie
Women's Bikini Brief - Scorpio - Bamboo Underwear - Model:Yolanda
Green Women's Underwear - Model:Alexandra
Light Green Bamboo Underwear for Women - Model:Alexandra
Dark Grey Women's Bamboo Underwear - Model:Alexandra
Size:

Bikini Brief Size Guide
Example: If you usually wear a medium, we recommend ordering a large.
Size
UK Size
Waist (CM)
 4XS
 0
40-44cm 
 3XS
 2
45-51cm 
 2XS
 4
 52-59cm
 XS
 6
 60-69cm
 S
8-10 
 70-76cm
 M
12-14
 77-82cm
 L
 16
 83-87cm
 XL
 18
 88-94cm
 2XL
 20
 95-101cm
 3XL
 22
 102-107cm
 4XL
 24
 108-113cm
 5XL
 26
 114-120cm

 

At Step Ones, we are incredibly confident that you'll adore your purchase. However, we understand that personal preferences vary, and if, for any reason, you don't like your first opened and worn pair, we'll be more than happy to provide you with a full refund. Customer satisfaction is our top priority, and we want you to feel completely at ease when shopping with us.
Even if you accidentally picked the wrong size, don't worry – we've got you covered! In addition to our first pair guarantee, we extend returns and exchanges to all unopened products. We want to ensure that you find the perfect fit and are completely satisfied with your Step Ones experience. Your comfort and happiness are essential to us, and we strive to make the entire process seamless and enjoyable. Shop with confidence and know that we're here to assist you every step of the way.

Our bikini brief range runs on the smaller side.  If you are unsure or in between sizes we recommend sizing up.

Why these are life changing

Super soft bamboo material keeps everything sweat-free

No-tug waistband accentuates your natural curves

Naturally hypoallergenic bamboo material for perfect comfort

First Pair Guarantee - Love them or they're free!

Recommended for you

SmoothFit
Padded Bra Espresso-Tini

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SmoothFit
Thong Espresso-Tini

£13.90

SmoothFit
Bikini Brief Espresso-Tini

£15.90

What makes Step Ones special?

Organically Grown Bamboo

This organic material, produced in a close-loop system, wicks away sweat and moisture and allows you to breathe all day long!

Super Comfortable

Our classic bikini brief is cut for comfort. The perfect go to staple for daily wear, our brief features a super soft, moulded waistband. The classic cut provides moderate to full coverage, perfect under all clothing.

Inclusive Size Range

Our underwear is designed for every body. Enhancing individual shape with the perfect fit & cut. We offer sizes 2XS - 5XL, and that's only the beginning!

Trustpilot

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[EXP-A] Women's SmoothFit Full Brief - Piña Colada - Bamboo Underwear - Model:ElkeWomen's SmoothFit Full Brief - Piña Colada - Bamboo Underwear
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[EXP-A] Women's SmoothFit Thong - Blue Lagoon - Bamboo Underwear - Model:ElkeWomen's SmoothFit Thong - Blue Lagoon - Bamboo Underwear
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[EXP-A] Women's SmoothFit Thong - Chic Champagne - Bamboo Underwear - Model:ElkeWomen's SmoothFit Thong - Chic Champagne - Bamboo Underwear
Women's SmoothFit Thong - Chic Champagne Sale price£13.90

First Pair Guarantee

We are so confident you'll love your Step Ones, we'll give you a full refund on your first opened and worn pair if you don't like them for any reason.

Free shipping on all orders!

Free shipping on all orders in the UK... how good!

Customer Service

Buy with confidence, our dedicated customer service team is available 24/7 to answer any questions you have!

Easy Returns

Picked the wrong size by mistake? No problem. On top of our first pair guarantee we also offer returns/exchanges on all unopened products.