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
Marks & Spencer
M&S Cotton Rich Period High Leg Knickers Carbon
£12.00
New Look
New Look Cream Crochet Lace Thong
£3.00
British Boxers
British Boxers Women's Multicolor Hipster Briefs Four Pack
£36.00
Marks & Spencer
M&S Rose Quartz Microfibre Full Briefs 5-Pack
£12.00
New Look
New Look Tan Microfibre No VPL Short Briefs
£4.49
British Boxers
British Boxers Light Grey Stripe Pyjama Trousers
£32.50
Marks & Spencer
M&S White Lace Hipster Knickers 3-Pack
£10.00
New Look
New Look Cream Satin & Lace Brazilian Briefs
£8.99
British Boxers
British Boxers Light Pink Brushed Cotton Nightshirt
£47.50
Marks & Spencer
M&S Dark Cream Satin Tanga Brazilian Knickers
£12.00
New Look
New Look Light Pink Satin Look Micro Lace Thong
£3.99
British Boxers
British Boxers Burgundy Tartan Pyjama Trousers
£39.00
Marks & Spencer
M&S Brown Haze Microfibre Full Briefs 5-Pack
£12.00
New Look
New Look Black Satin Look Micro Lace Brazilian Briefs
£4.49
British Boxers
British Boxers Turquoise Stripe Cotton Short Pyjama Set
£73.50
Marks & Spencer
M&S Grey Mix Cotton-Rich Period Knickers Low Rise Short
£12.00
New Look
New Look White Microfibre Ruched Back Thong
£3.49
British Boxers
British Boxers Baby Pink Tartan Nightshirt
£95.00
Marks & Spencer
M&S 3 Pack Cotton Rich Dipped Miami Knickers Black
£8.00
New Look
New Look Black Lace Back Brazilian Briefs
£3.99
British Boxers
British Boxers Teal Check Pyjama Trousers for Women
£32.50
Marks & Spencer
M&S 5pk Cotton Rich Printed High Leg Knickers Dusty Green
£12.00
New Look
New Look Lilac Lace Thong
£3.59
British Boxers
British Boxers Burgundy Tartan Brushed Cotton Nightshirt
£57.00
Showing 192 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.