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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

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    New Look Women's Oatmeal Rib Lace Thong New Look
    New Look

    New Look Oatmeal Rib Lace Thong

    £6.99
    British Boxers British Boxers Women's "Gaia" Tartan Brushed Cotton Pyjama Trousers in Burgundy
    British Boxers

    British Boxers Burgundy Tartan Pyjama Trousers

    £39.00
    Yours 5 Pack Plus Size Teal Green Animal Print Full Briefs
    Yours

    Yours Plus Size Teal Green Animal Print Full Briefs 5 Pack

    £14.99
    Marks & Spencer M&S 5pk Pure Cotton High Leg Knickers Rose Quartz
    Marks & Spencer

    M&S 5pk Pure Cotton High Leg Knickers Rose Quartz

    £8.00
    New Look Women's Light Grey Heart Print Lace Top Thong New Look
    New Look

    New Look Light Grey Heart Print Lace Thong

    £2.00
    British Boxers British Boxers Women's "Gaia" Tartan Brushed Cotton Nightshirt in Burgundy
    British Boxers

    British Boxers Burgundy Tartan Brushed Cotton Nightshirt

    £57.00
    Yours 5 Pack Plus Size Pink & Grey Heart Full Briefs
    Yours

    Yours Plus Size Pink & Grey Heart Full Briefs 5-Pack

    £14.99
    Marks & Spencer M&S 5pk Microfibre High Leg Knickers Eco White
    Marks & Spencer

    M&S 5pk Microfibre High Leg Knickers Eco White

    £12.00
    New Look Women's Dark Brown Polka Dot Microfibre Lace Top Thong New Look
    New Look

    New Look Dark Brown Polka Dot Microfibre Lace Top Thong

    £3.49
    British Boxers British Boxers Women's "Byzantine Paisley" Crisp Cotton Short Sleeve Nightshirt in Dark Pink
    British Boxers

    British Boxers Dark Pink Paisley Nightshirt

    £89.00
    Yours 5 Pack Plus Size Black Animal Heart High Waisted Full Briefs
    Yours

    Yours Plus Size Black Animal Heart High Waisted Full Briefs 5

    £14.99
    Marks & Spencer M&S 3 Pack Jasmine All Over Lace Hipster Knickers White
    Marks & Spencer

    M&S 3 Pack Jasmine All Over Lace Hipster Knickers White

    £10.00
    New Look Women's White Free Cut No VPL Thong New Look
    New Look

    New Look White Microfibre Thong

    £3.49
    British Boxers British Boxers Women's "Acorn Squash" Check Brushed Cotton Nightshirt in Teal
    British Boxers

    British Boxers Teal Check Brushed Cotton Nightshirt

    £47.50
    Yours 3 Pack Plus Size Pink & Blue Lace Full Briefs
    Yours

    Yours Plus Size Pink & Blue Lace Full Briefs 3 Pack

    £14.99
    Marks & Spencer M&S 3pk Cotton Rich Hipster Knickers Opaline Mix
    Marks & Spencer

    M&S 3pk Cotton Rich Hipster Knickers Opaline Mix

    £8.00
    New Look Women's Red Jersey Brazilian Briefs New Look
    New Look

    New Look Red Jersey Brazilian Briefs

    £3.49
    British Boxers British Boxers Women's "Chalk" Stripe Brushed Cotton Pyjama Trousers in Grey
    British Boxers

    British Boxers Grey Stripe Brushed Cotton Pyjama Trousers

    £39.00
    Yours 3 Pack Plus Size Pink Lace Trim Full Briefs
    Yours

    Yours Plus Size Pink Lace Trim Full Briefs 3 Pack

    £14.99
    Marks & Spencer M&S 10pk Cotton Lycra® Full Brief Knickers Dark Blue
    Marks & Spencer

    M&S 10pk Cotton Lycra® Full Brief Knickers Dark Blue

    £16.00
    New Look Women's White No VPL Lace Back Brazilian Briefs New Look
    New Look

    New Look White Lace Back Brazilian Briefs

    £3.49
    British Boxers British Boxers Women's Pack of Four "Juniper" Bamboo Full Briefs
    British Boxers

    British Boxers Multicolor Bamboo Full Briefs Pack of Four

    £32.00
    Yours Plus Size 2 Pack Black & White Seamless Light Control Full Briefs
    Yours

    Yours Plus Size Black & White Seamless Light Control Full Briefs

    £22.00
    Marks & Spencer M&S 2 Pack Asta Rib High Leg Knickers Black
    Marks & Spencer

    M&S 2 Pack Asta Rib High Leg Knickers Black

    £12.00

    Showing 264 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.