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
353 products
New Look
New Look Red Jersey Brazilian Briefs
£3.49
Marks & Spencer
M&S 3pk Cotton Rich Hipster Knickers Opaline Mix
£8.00
British Boxers
British Boxers Pale Green Floral Strappy Nightdress
£37.83
New Look
New Look White Lace Back Brazilian Briefs
£3.49
Marks & Spencer
M&S Dark Raspberry Lace Trim Seamless High Leg Knickers
£10.00
British Boxers
British Boxers Women's Pack of Four Bamboo Full Briefs
£32.00
New Look
New Look Black and Red Contrast Trim Micro Thong
£1.50
Marks & Spencer
M&S Cream Papertouch Tanga Thong
£8.00
British Boxers
British Boxers Light Pink Bamboo Full Briefs Pack of Four
£32.00
New Look
New Look Black Mesh Floral Embroidered Thong
£3.50
Marks & Spencer
M&S Leopard Print Brazilian Knickers Medium Peach
£8.00
British Boxers
British Boxers Dark Green Brushed Cotton Pyjama Trousers
£39.00
New Look
New Look Black Lace Criss Cross Thong
£2.00
Marks & Spencer
M&S Black Lace Trim Miami Knickers - Pack of 3
£10.00
British Boxers
British Boxers Blue Brushed Cotton Pyjama Trousers
£39.00
New Look
New Look Red Heart Print Lace Thong
£2.00
Marks & Spencer
M&S Nightshade Cotton Lycra® Full Briefs 5-Pack
£8.00
British Boxers
British Boxers Light Grey Striped Nightshirt
£47.50
New Look
New Look Light Yellow Mesh Floral Lace Thong
£5.99
Marks & Spencer
M&S Black Seamless High Leg Knickers 3-Pack
£10.00
British Boxers
British Boxers Women's 'Lucky Dip' Four Pack of High Leg Knickers
£25.00
New Look
New Look Light Pink Floral Lace Thong
£3.49
Marks & Spencer
M&S Pink Mix Pure Cotton Miami Knickers 7-Pack
£11.00
British Boxers
British Boxers Light Pink Brushed Cotton Pyjama Trousers
£32.50
Showing 168 of 353
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.