Casual Underwear
Comfortable, well-fitting underwear is the foundation of every outfit, literally. Briefs, thongs, hipsters, boy shorts, seamless styles in cotton, modal, lace, and performance fabrics. We carry options from M&S, ASOS, and specialist brands across a wide range of sizes. Many featured brands offer inclusive sizing and sustainable fabrics. Use our filters to browse by style and fabric, or tell the AI stylist what you need.
Products
482 products
New Look
New Look Pale Yellow Ribbed Seamless Thong
£2.00
British Boxers
British Boxers Light Blue Stripe Cotton Pyjama Trousers
£55.25
Yours
Yours Plus Size Black Detachable Suspender Faux Leather Full
£12.99
Marks & Spencer
M&S 5 Pack Cotton Rich Ribbed Brazilian Knickers Black
£14.00
New Look
New Look Red Lace Trim Micro Thong
£1.50
British Boxers
British Boxers Teal Brushed Cotton Nightshirt
£80.75
Yours
Yours Plus Size Pink Daisy Print Full Briefs 5 Pack
£14.99
Marks & Spencer
M&S 3 Pack Jasmine Mesh Brazilian Knickers Dark Raspberry
£10.00
New Look
New Look White Microfibre Short Briefs
£4.49
British Boxers
British Boxers Pale Green Floral Cotton Nightshirt
£40.38
Yours
Yours Plus Size Navy Blue Floral Print Full Briefs 5 Pack
£14.99
Marks & Spencer
M&S 5pk Cotton Rich Printed Brazilian Knickers Coral
£12.00
New Look
New Look Plus Size Black Leopard Print High Waisted Thong
£5.00
British Boxers
British Boxers Women's Pack of Four Bamboo Full Briefs
£32.00
Yours
Yours Plus Size Teal Blue Shooting Star Full Briefs 5 Pack
£14.99
Marks & Spencer
M&S 5pk Cotton Lycra® Full Briefs Blue Mix
£5.60
New Look
New Look Red Heart Embroidered High Waisted Thong
£4.00
British Boxers
British Boxers Light Pink Bamboo Full Briefs Pack of Four
£32.00
Yours
Yours Plus Size Grey Fairisle Full Briefs 5-Pack
£14.99
Marks & Spencer
M&S 3 Pack Jasmine Mesh Brazilian Knickers Black
£10.00
New Look
New Look Light Pink Seamless Lace Trimmed Ribbed Jersey Thong
£2.50
British Boxers
British Boxers Dark Green Brushed Cotton Pyjama Trousers
£39.00
Yours
Yours Plus Size Pink Floral Print Full Briefs 5 Pack
£14.99
Marks & Spencer
M&S Jasmine Lace Full Briefs White 3-Pack
£10.00
Showing 216 of 482
Frequently Asked Questions
What underwear style is most comfortable for daily wear?▾
Highly personal, but mid-rise hipsters or briefs in cotton or modal are popular for all-day comfort. Seamless styles work best under fitted clothing. The key is finding something that doesn't dig in, ride up, or bunch. Our size guides per brand help get this right first time.
How often should I replace underwear?▾
Every 6-12 months depending on wear frequency. Signs: stretched elastic, faded colour, thinning fabric, loss of shape. Having 15-20 pairs in rotation ensures none are overworked. This is one category where new rather than preloved makes sense.
What underwear works best under tight-fitting clothes?▾
Seamless, bonded-edge underwear in a nude matching your skin tone. Thongs eliminate visible lines entirely. Laser-cut edges lie flat. Avoid lace edges, thick seams, or decorative details under figure-hugging garments, they show through more than you'd expect.