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.

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.

Products

New Look Dark Purple Seamless Ribbed Thong

British Boxers Baby Blue Cotton Robe

Yours Plus Size Burgundy Red Leopard Print Briefs

M&S 2 Pack Jasmine Lace Seamless High Leg Knickers Dark Wine

New Look Dark Purple Lace Thong

British Boxers Dark Navy Cotton Zip-up Hoodie

Yours Plus Size 5 Pack Black Bow Print Full Briefs

M&S 5pk Cotton Rich Printed Brazilian Knickers Pink Mix

New Look Black Bow Embroidered Ribbed Seamless Thong

British Boxers Multicolor Check Brushed Cotton Dressing Gown

Yours Plus Size 3 Pack Navy Blue & Pink Leopard Print Brazilian

M&S 5pk Cotton Rich Printed Brazilian Knickers Praline

New Look Brown Leopard Print Microfibre Briefs

British Boxers Baby Blue Striped Cotton Pyjama Trousers

Yours Plus Size Purple & Black Floral Lace Briefs 2 Pack

M&S 5pk Cotton Rich Lycra® High Leg Knickers Bitter Chocolate

New Look Tan Bonded Microfibre Shaping Thong

British Boxers Dark Green Tartan Brushed Cotton Nightshirt

Yours Plus Size Black Floral Print Full Briefs 5 Pack

M&S 3pk Cotton Rich High Leg Knickers Black

New Look Brown Smooth Stretch Microfibre High Waisted Thong

British Boxers Light Blue Stripe Cotton Nightshirt

Yours Plus Size Black Detachable Suspender Full Briefs

M&S Ida Lace High Waisted High Leg Knickers Rose Quartz

Frequently Asked Questions

Casual Underwear

Products

New Look Dark Purple Seamless Ribbed Thong

British Boxers Baby Blue Cotton Robe

Yours Plus Size Burgundy Red Leopard Print Briefs

M&S 2 Pack Jasmine Lace Seamless High Leg Knickers Dark Wine

New Look Dark Purple Lace Thong

British Boxers Dark Navy Cotton Zip-up Hoodie

Yours Plus Size 5 Pack Black Bow Print Full Briefs

M&S 5pk Cotton Rich Printed Brazilian Knickers Pink Mix

New Look Black Bow Embroidered Ribbed Seamless Thong

British Boxers Multicolor Check Brushed Cotton Dressing Gown

Yours Plus Size 3 Pack Navy Blue & Pink Leopard Print Brazilian

M&S 5pk Cotton Rich Printed Brazilian Knickers Praline

New Look Brown Leopard Print Microfibre Briefs

British Boxers Baby Blue Striped Cotton Pyjama Trousers

Yours Plus Size Purple & Black Floral Lace Briefs 2 Pack

M&S 5pk Cotton Rich Lycra® High Leg Knickers Bitter Chocolate

New Look Tan Bonded Microfibre Shaping Thong

British Boxers Dark Green Tartan Brushed Cotton Nightshirt

Yours Plus Size Black Floral Print Full Briefs 5 Pack

M&S 3pk Cotton Rich High Leg Knickers Black

New Look Brown Smooth Stretch Microfibre High Waisted Thong

British Boxers Light Blue Stripe Cotton Nightshirt

Yours Plus Size Black Detachable Suspender Full Briefs

M&S Ida Lace High Waisted High Leg Knickers Rose Quartz

Frequently Asked Questions