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    1. Home
    2. /Women
    3. /Clothing
    4. /Underwear & Socks
    5. /Underwear

    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

    Filter & Sort

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    British Boxers British Boxers Women's Pack of Four "Ivory" Bamboo Full Briefs in Off-White
    British Boxers

    British Boxers Off-White Bamboo Full Briefs Pack of Four

    £32.00
    New Look Women's White Lace Criss Cross Detail Thong New Look
    New Look

    New Look White Lace Thong

    £3.99
    Marks & Spencer M&S Lace & Mesh Miami Knickers Ivory
    Marks & Spencer

    M&S Lace & Mesh Miami Knickers in Ivory

    £14.00
    British Boxers British Boxers Women's Pack of Four "Bunch of Roses" Bamboo Hipster Boxer Briefs in Dusty Pink
    British Boxers

    British Boxers Dusty Pink Hipster Briefs Pack of Four

    £36.00
    New Look Women's Black Non-Wired Floral Lace Thong Bodysuit New Look
    New Look

    New Look Black Floral Lace Thong Bodysuit

    £19.99
    Marks & Spencer M&S 3 Pack Seamless High Leg Knickers Grey Mix
    Marks & Spencer

    M&S Seamless High Leg Knickers in Grey Mix

    £10.00
    British Boxers British Boxers Women's Pack of Four "Black" Bamboo Full Briefs in Black
    British Boxers

    British Boxers Black Bamboo Full Briefs Pack of Four

    £32.00
    New Look Women's White Non-Wired Floral Lace Thong Bodysuit New Look
    New Look

    New Look White Floral Lace Bodysuit

    £19.99
    Marks & Spencer M&S 4pk Cotton Rich Tanga Thongs Grey Mix
    Marks & Spencer

    M&S Cotton Rich Tanga Thongs in Grey Mix

    £12.00
    British Boxers British Boxers Women's "Orkney" Herringbone Brushed Cotton Pyjama Trousers in Light Green
    British Boxers

    British Boxers Light Green Brushed Cotton Pyjama Trousers

    £65.00
    New Look Women's Bright Pink Smooth Lace Trim Thong New Look
    New Look

    New Look Bright Pink Microfibre Lace Trim Thong

    £2.99
    Marks & Spencer M&S 2 Pack Jasmine Lace Period Thongs Black
    Marks & Spencer

    M&S Black Lace Period Thongs

    £12.00
    British Boxers British Boxers Women's "Heather Snow" Cotton Zip-up Hoodie in Light Grey
    British Boxers

    British Boxers Heather Snow Light Grey Cotton Zip-up Hoodie

    £69.00
    New Look Women's Bright Pink Floral Lace Brazilian Briefs New Look
    New Look

    New Look Bright Pink Floral Lace Brazilian Briefs

    £3.99
    Marks & Spencer M&S 3 Pack Cotton Rich Ribbed Brazilian Knickers Oatmeal Mix
    Marks & Spencer

    M&S Brazilian Knickers with Lace Trim in Oatmeal Mix

    £10.00
    British Boxers British Boxers Women's "Schoolhouse Blue" Gingham Crisp Cotton Short Pyjama Set in Light Blue
    British Boxers

    British Boxers Light Blue Gingham Pyjama Set

    £105.00
    New Look Women's Brown Spotty Lace Top Thong New Look
    New Look

    New Look Brown Spotty Lace Thong

    £3.49
    Marks & Spencer M&S 3 Pack Floral Pointelle Brazilian Knickers Grey Mix
    Marks & Spencer

    M&S Floral Pointelle Brazilian Knickers in Grey Mix

    £10.00
    British Boxers British Boxers Women's Pack of Four "Cherry Pie" Bamboo Full Briefs in Dark Pink
    British Boxers

    British Boxers Dark Pink Bamboo Full Briefs Pack of Four

    £32.00
    New Look Women's White Ruched Back Thong New Look
    New Look

    New Look White Jersey Ruched Back Thong

    £2.99
    Marks & Spencer M&S 3 Pack Lace Brazilian Knickers Black Mix
    Marks & Spencer

    M&S Lace Brazilian Knickers Black Mix

    £10.00
    British Boxers British Boxers Women's Pack of Three "Pink Gin" Hipster Boxer Briefs in Bright Pink
    British Boxers

    British Boxers Pink Gin Hipster Boxer Briefs Pack of Three

    £28.00
    New Look Women's White Microfibre Lace Back Brazilian Briefs New Look
    New Look

    New Look White Microfibre Lace Back Brazilian Briefs

    £3.49
    Marks & Spencer M&S 3 Pack Floral Lace Hipster Knickers Cream Mix
    Marks & Spencer

    M&S Floral Lace Hipster Knickers Cream Mix

    £10.00

    Showing 264 of 353

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    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.