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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 White Spotty Lace Thong New Look
    New Look

    New Look White Spotty Lace Thong

    £1.50
    British Boxers British Boxers Women's 'Montrose' Check Brushed Cotton Pyjama Trousers
    British Boxers

    British Boxers Women's 'Montrose' Check Pyjama Trousers

    £65.00
    Yours 4 Pack Black Lace Trim High Waisted Full Briefs
    Yours

    Yours Black Lace Trim High Waisted Full Briefs 4 Pack

    £14.99
    Marks & Spencer M&S 5pk Cotton Lycra™ Printed Full Briefs Soft Blue
    Marks & Spencer

    M&S Soft Blue Cotton Lycra Full Briefs 5-Pack

    £8.00
    New Look Women's Light Pink Ruched Back Thong New Look
    New Look

    New Look Light Pink Ruched Back Thong

    £2.00
    British Boxers British Boxers Women's Pack of Four "Fresh Pastels" Bamboo Hipster Boxer Briefs
    British Boxers

    British Boxers Women's Pack of Four Fresh Pastels Hipster Briefs

    £36.00
    Yours Plus Size 3 Pack Black Lace Full Briefs
    Yours

    Yours Plus Size Black Lace Full Briefs 3 Pack

    £14.99
    Marks & Spencer M&S 2 Pack Amelia Lace Cotton Rich Shaping Knickers Rose Quartz
    Marks & Spencer

    M&S Rose Quartz Cotton-Rich Shaping Knickers

    £12.00
    New Look Women's Plus Size Black High Waisted Lace Thong Curves New Look
    New Look

    New Look Black Lace Thong and Bra Set for Plus Size

    £7.99
    British Boxers British Boxers Women's 'Dumbarton' Tartan Brushed Cotton Nightshirt
    British Boxers

    British Boxers Red & Blue Tartan Nightshirt

    £95.00
    Yours 3 Pack Plus Size Red & Black Lace Back High Waisted Knickers
    Yours

    Yours Plus Size Red & Black Lace Back High Waisted Knickers 3

    £14.99
    Marks & Spencer M&S 5 Pack Cotton Lycra® Brazilian Knickers Bitter Chocolate
    Marks & Spencer

    M&S 5 Pack Cotton Lycra® Brazilian Knickers Bitter Chocolate

    £8.00
    New Look Women's White Cherry Micro Lace Top Thong New Look
    New Look

    New Look White Cherry Micro Lace Thong

    £3.49
    British Boxers British Boxers Women's "Coral Shire" Square Brushed Cotton Dressing Gown in Coral
    British Boxers

    British Boxers Coral Shire Dressing Gown in Coral

    £125.00
    Yours 5 Pack Curve Black & Pink Bow Print Full Briefs
    Yours

    Yours Curve Black & Pink Bow Print Full Briefs 5 Pack

    £14.99
    Marks & Spencer M&S 3pk Cotton Rich Full Briefs Opaline Mix
    Marks & Spencer

    M&S Opaline Mix Cotton Rich Full Briefs 3-Pack

    £8.00
    New Look Women's Light Pink Daisy Mesh Thong New Look
    New Look

    New Look Light Pink Daisy Mesh Thong

    £3.49
    British Boxers British Boxers Women's 'Westwood' Blue Stripe Brushed Cotton Pyjama Trousers in Light Blue
    British Boxers

    British Boxers Light Blue Stripe Pyjama Trousers

    £65.00
    Yours 5 Pack Plus Size Black High Leg Briefs
    Yours

    Yours Plus Size Black High Leg Briefs 5 Pack

    £14.99
    Marks & Spencer M&S 3pk Jasmine Lace High Waisted High Leg Knickers Dark Wine
    Marks & Spencer

    M&S Dark Wine Lace High Waisted Knickers 3-Pack

    £10.00
    New Look Women's White No Vpl Lace Back Brazilian Briefs New Look
    New Look

    New Look White Microfibre Lace Back Brazilian Briefs

    £3.99
    British Boxers British Boxers Women's "Coral Shire" Square Brushed Cotton Nightshirt in Coral
    British Boxers

    British Boxers Coral Shire Nightshirt in Coral

    £95.00
    Yours 5 Pack Plus Size Black & Pink Check Print High Leg Knickers
    Yours

    Yours Plus Size Black & Pink Check Print High Leg Knickers 5 Pack

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

    M&S Russet Lace High Waisted Knickers 2 Pack

    £12.00

    Showing 384 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.