Size Guide

View our sizing charts below. If you're in-between sizes, we recommend sizing up for comfort! If you need more specific sizing help, please email us at


How to Measure Yourself

Chest band: wrap the tape measure around your body, just under your bust.

Bust: measure the fullest part of your bust. 

Waist: measure around your body approximately 5cm below your natural waist where the waistband of trousers normally sit.

Lower hip: wrap the tape measure around the fullest part of your hips and bottom.

Two-Way Strap Bralette:

Bralette Size UK Band Width (in) Band Width (cm) Fits Bra Sizes (Approx)
XS 8-10 27" 68.5 30 B/C/D - 32 A/B/C
S 10-12 29.5" 75 32 B/C/D - 34 A/B/C
M 12-14 32" 81 34 C/D - 36 A/B/C
L 14-16 34.5" 87.5 36 C/D - 38 A/B

More Supportive Bra:

Bra size Chest band measurement (inches) Approx. cup sizes Approx. UK dress size
Small 28-30" C, D, DD 8- 10
Small + 28-30" DD, E, F 8- 10
Medium 32-34" C, D, DD 12-14
Medium + 32-34" DD, E, F 12-14
Large 36-38" C, D, DD 16-18
Large + 36-38" DD, E, F 16-18

Women's Thongs, Bikinis, and Boy Shorts:

UK Sizes EU Size Waist (in) Waist (cm) Hips (in) Hips (cm)
6 34 23-24 58.5 - 61 33 84
8 36 25-26 63.5 - 66 35 89
10 38 27-28 68.5 - 71 37 94
12 40 29-30 73.5 - 76 39 99
14 42 31-32 78.5 - 81 41 104
16 44 33-34 83.5 - 86 43 109
18 46 35-36 88.5 - 91 45 114
20 48 37-38 93.5 - 96 47 119
22 50 39-40 99.5 - 101 49 124

Men's Hipster Trunks:

Size Waist (in) Waist (cm) Clothing Size (approx.) (in) Clothing Size (approx.) (cm)
S 31-33" 79-84 30-32" 76-81
M 33-35" 84-89 32-34" 81-86
L 36-38" 91.5-96.5 34-36" 86-91
XL 39-41" 99-104 36-38" 91-97
XXL 41-43" 104-109 38-40" 97-102

Girls' Bralettes:

We feel that there isn’t a set size for bodies at different ages, and we don’t want to put any additional pressure on young girls, so our sizing looks a little different. We have 4 sizes, all named after Ugandan towns! We suggest using band width as a starting point, although do get in touch if you have any specific sizing questions.
Size Band Width (in) Band Width (cm) Fits Ages (Approx.) Worn By:
Jinja 23 57-58 9-10 Hollie & Amelia, age 9 1/2,
band with 23"
Kira 25 63-64 10-11 Help us fill this in ...
Lira 27 68-69 11-14 Liv, age 11.
Phoebe & Flora, age 11 1/2.
Lana, age 13 1/2, 69cm band width,
wears 30B/XS.
Beth, age 14.
Masaka 29 73-74 13+ Hannah, 32C

Girls’ Knickers:

Details Waist (in) Hips (in) Ages (Approx.) Women's equivalent size
Jinja 22-23.5” 25-27” 7-9 4
(EU 32)
Kira 24-25” 30-32” 9-11 6
(EU 34)
Lira 25.5-27” 34-35” 11-13 8
(EU 36)
Masaka 27.5-28.5” 37.5-38.5” 13+ 10
(EU 38)



UK Orders

Order Size Postage Cost 
Smaller single items & small packs  £2.25
Larger single items & larger packs £3.95

All posted using Royal Mail Tracked 48 service

Upgrades to Tracked 24 (next day) available at Checkout 

Free UK shipping on orders over £60


Spring 2024 offer - Free local Oxford deliveries

As part of our continued efforts to reduce our footprint, we have teamed up with Velocity and Oxford City Council to use cargo bikes to deliver local orders within the Oxford Ring Road. Transport is the biggest contributor to emissions in the UK, as well as impacting our local community, so every step to reduce it helps. 

As part of the launch campaign, we are offering FREE local deliveries within the Oxford Ring Road with this new zero emissions service 🚴 Simply enter the code "oxfordcycle" at checkout for free 48 hour delivery to addresses within the Oxford Ring Road. 


International Orders

Region Single items & small packs Larger packs
Europe zone 1 * £5.90 £7.90
Europe zone 2 ** £7.90 £9.90
Europe zone 3 *** £11.90 £19.90
USA & Canada £7.90 £11.90
Rest of the World (including Australia & New Zealand) £10.90 £19.90


  All posted using Royal Mail's International Tracked service.


*** European Orders ***

We're delighted to announce that EU orders are now back up and running! 
All European customers can once again order worry-free from our website knowing that the price shown is the final price, with no hidden taxes or collection fees from postal services. ** This applies to all orders under 150€ (excluding delivery), which will arrive with no additional taxes, duties or fees to pay. ** 
EU Region Countries
Europe zone 1 * Andorra, Czech Republic, Denmark, Faroe Islands, France, Germany, Greenland, Ireland, Netherlands, Poland, Spain, Sweden
Europe zone 2 ** Aaland Islands, Albania, Armenia, Austria, Belgium, Bosnia, Bulgaria, Croatia, Cyprus, Estonia, Finland, Georgia, Gibraltar, Greece, Hungary, Italy, Kosovo, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Montenegro, North Macedonia, Norway, Portugal, Romania, San Marino, Slovakia, Slovenia, Switzerland, Turkey, Ukraine, Vatican City
Europe zone 3 *** Guadeloupe, Iceland, Latvia, Reunion, Serbia



How Long Will Delivery Take?

We aim to send out all orders placed before 2pm the same day and you’ll get an email to let you know when your order is on the way! 

 What Packaging Do You Use?

Every order is packaged in reusable,100% organic cotton bags, then parcelled in a biodegradable mailer made from 100% recycled materials.

To further our zero-waste commitments, we’ve partnered with YagoEco to turn our mailing bags into beautiful green recycled plastic earrings! If you’d like to ensure your packaging gets reused, feel free to send any old mailer bags back to us at Y.O.U underwear, 11 Bodley Place, Oxford, OX2 7TF. 

We also offer a £1 discount if you don't want our reusable cotton bags (or already have one), please use the code NOBAG at checkout. 

Refunds & Returns

We want you to love your new super soft Y.O.U undies and hope that they fit perfectly. However we understand that isn’t always the case, so we offer a happiness guaranteed return policy. 

If you are unhappy for any reason, we offer a fuss-free exchange or refund on all items within 30 days of purchase. Simply return them to us at the address below, along with your name and order number:

Y.O.U underwear, 11 Bodley Place, Oxford, OX2 7TF

Unfortunately, as a small business we can’t cover the cost of returning the items to us. However we do pay for your replacement undies to go out. 

We hope this gives you confidence to refresh your underwear drawer and start changing the world one pair of pants at a time. If you have any further questions about returns, please contact us at 

*Please Note:

  • Earrings and menstrual cups are non-returnable for hygiene reasons.
  • We have the right to refuse a refund if the item is in an unsatisfactory condition. Returns need to be made unwashed, unworn, undamaged and in their original packaging.

Still got a question? Head to our FAQs for more information, or email us at