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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

    482 products

    Filter & Sort

    -
    New Look Women's White Microfibre Ruched Back Thong New Look
    New Look

    New Look White Microfibre Ruched Back Thong

    £3.49
    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
    Yours 5 Pack Plus Size Black & Yellow Daisy Full Briefs
    Yours

    Yours Plus Size Black & Yellow Daisy Full Briefs 5 Pack

    £14.99
    Marks & Spencer M&S 3 Pack Heavy Absorbency Period Full Briefs Brown Mix
    Marks & Spencer

    M&S 3 Pack Heavy Absorbency Period Full Briefs Brown Mix

    £16.00
    New Look Women's Black No Vpl Lace Back Brazilian Briefs New Look
    New Look

    New Look Black Lace Back Brazilian Briefs

    £3.99
    British Boxers British Boxers Women's "Berwick" Check Brushed Cotton Nightshirt in Indigo
    British Boxers

    British Boxers Indigo Check Brushed Cotton Nightshirt

    £95.00
    Yours 5 Pack Plus Size Blue Floral Print Full Briefs
    Yours

    Yours Plus Size Blue Floral Print Full Briefs 5 Pack

    £14.99
    Marks & Spencer M&S 5pk Cotton Modal Brazilian Knickers Rose Quartz
    Marks & Spencer

    M&S 5pk Cotton Modal Brazilian Knickers Rose Quartz

    £12.00
    New Look Women's Lilac Lace Thong New Look
    New Look

    New Look Lilac Lace Thong

    £2.00
    British Boxers British Boxers Women's "Lomond" Tartan Brushed Cotton Dressing Gown in Bright Pink
    British Boxers

    British Boxers Bright Pink Tartan Dressing Gown

    £75.00
    Yours 5 Pack Plus Size Black Leaf Print Full Briefs
    Yours

    Yours Plus Size Black Leaf Print Full Briefs 5 Pack

    £14.99
    Marks & Spencer M&S 2 Pack Ida Lace High Waisted High Leg Knickers Rose Quartz
    Marks & Spencer

    M&S 2 Pack Ida Lace High Waisted High Leg Knickers Rose Quartz

    £9.00
    New Look Women's Yellow Daisy Embroidered Mesh Thong New Look
    New Look

    New Look Yellow Daisy Embroidered Mesh Thong

    £2.00
    British Boxers British Boxers Women's "Pink Cloud" Cotton Zip-up Hoodie in Light Pink
    British Boxers

    British Boxers Light Pink Cotton Zip-up Hoodie

    £69.00
    Yours 5 Pack Plus Size Black High Leg Knickers
    Yours

    Yours Plus Size Black High Leg Knickers 5 Pack

    £14.99
    Marks & Spencer M&S 2 Pack Ida Lace High Waisted High Leg Knickers Nightshade
    Marks & Spencer

    M&S 2 Pack Ida Lace High Waisted High Leg Knickers Nightshade

    £12.00
    New Look Women's Light Yellow Floral Lace Brazilian Briefs New Look
    New Look

    New Look Light Yellow Floral Lace Brazilian Briefs

    £3.19
    British Boxers British Boxers Women's "Lomond" TartanBrushed Cotton Pyjamas in Bright Pink
    British Boxers

    British Boxers Bright Pink Tartan Pyjamas in Brushed Cotton

    £69.00
    Yours 5 Pack Plus Size Blue Leaf Print Full Briefs
    Yours

    Yours Plus Size Blue Leaf Print Full Briefs 5 Pack

    £14.99
    Marks & Spencer M&S 7 Pack Microfibre Full Briefs White Mix
    Marks & Spencer

    M&S 7 Pack Microfibre Full Briefs White Mix

    £16.00
    New Look Women's Blue Floral Lace Thong New Look
    New Look

    New Look Blue Floral Lace Thong

    £6.39
    British Boxers British Boxers Women's "Lomond" Tartan Brushed Cotton Nightshirt in Bright Pink
    British Boxers

    British Boxers Bright Pink Tartan Nightshirt

    £57.00
    Yours 5 Pack Plus Size Black & White Butterfly Design High Waisted Full Briefs
    Yours

    Yours Plus Size Black & White Butterfly Design High Waisted Full

    £14.99
    Marks & Spencer M&S 2 Pack Ida Lace Miami Knickers Rose Quartz
    Marks & Spencer

    M&S 2 Pack Ida Lace Miami Knickers Rose Quartz

    £12.00

    Showing 336 of 482

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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.