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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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    British Boxers British Boxers Women's "Iona Tartan" Brushed Cotton Pyjama Trousers in Dark Red
    British Boxers

    British Boxers Women's Iona Tartan Brushed Cotton Pyjama

    £55.25
    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

    £6.30
    New Look Women's Black Bonded Smooth High Waisted Medium Control Shaping Brazilian Briefs New Look
    New Look

    New Look Black Bonded Smooth High Waisted Medium Control Shaping

    £4.00
    EGO Pierre Thong Strap Low Heeled Mule In Nude Faux Suede, Women's Size UK 3
    EGO

    EGO Nude Faux Suede Thong Strap Low Heeled Mule

    £24.00
    Yours 5 Pack Plus Size Red Ditsy Floral Full Briefs
    Yours

    Yours Plus Size Red Ditsy Floral Full Briefs 5-Pack

    £14.99
    British Boxers British Boxers Women's "Dusty Pink Herringbone" Brushed Cotton Nightshirt in Dusty Pink
    British Boxers

    British Boxers Women's "Dusty Pink Herringbone" Brushed Cotton Nightshirt in Dusty Pink

    £80.75
    Marks & Spencer M&S 2 Pack Ida Lace Miami Knickers Pale Yellow
    Marks & Spencer

    M&S 2 Pack Ida Lace Miami Knickers Pale Yellow

    £6.00
    New Look Women's Light Yellow Floral Lace Thong New Look
    New Look

    New Look Light Yellow Floral Lace Thong

    £1.00
    EGO Rita Clear Perspex Thong Strap Block Heeled Mule In Brown Faux Suede, Women's Size UK 3
    EGO

    EGO Brown Faux Suede Block Heeled Mule

    £27.00
    Yours 5 Pack Plus Size Purple & Pink Full Briefs
    Yours

    5 Pack Plus Size Purple & Pink Full Briefs

    £14.99
    British Boxers British Boxers Women's "Bright Raspberry Herringbone" Brushed Cotton Pyjama Trousers
    British Boxers

    British Boxers Women's Bright Raspberry Brushed Cotton Pyjama

    £55.25
    Marks & Spencer M&S 3pk Jasmine Lace High Waisted High Leg Knickers Pink Shimmer
    Marks & Spencer

    M&S 3pk Jasmine Lace High Waisted High Leg Knickers Pink Shimmer

    £5.00
    New Look Women's Brown Spotty Lace Top Thong New Look
    New Look

    New Look Brown Spotty Lace Top Thong

    £2.00
    EGO Rita Clear Perspex Thong Strap Block Heeled Mule In Beige Faux Suede, Women's Size UK 3
    EGO

    EGO Beige Faux Suede Block Heeled Mule

    £27.00
    Yours 5 Pack Plus Size Orange Floral Print Full Briefs
    Yours

    Yours Plus Size Purple Floral Print Full Briefs 5 Pack

    £14.99
    British Boxers British Boxers Women's "Bright Blue" Cotton Oversized Hoodie in Bright Blue
    British Boxers

    British Boxers Bright Blue Cotton Oversized Hoodie

    £58.65
    Marks & Spencer M&S 3pk Jasmine Lace High Waisted High Leg Knickers Khaki
    Marks & Spencer

    M&S 3pk Jasmine Lace High Waisted High Leg Knickers Khaki

    £10.00
    New Look Women's Red Heart Print Lace Top Thong New Look
    New Look

    New Look Red Heart Print Lace Thong

    £2.00
    EGO Direction Thong Strap Square Toe Slingback Heel In Black Faux Leather, Women's Size UK 3
    EGO

    EGO Square Toe Slingback Heel in Black

    £29.00
    Yours 5 Pack Plus Size Pink Floral Spring Full Briefs
    Yours

    Yours Plus Size Pink Floral Spring Full Briefs 5 Pack

    £14.99
    Marks & Spencer M&S 4pk Cotton Rich Full Briefs Light Blue Mix
    Marks & Spencer

    M&S 4pk Cotton Rich Full Briefs Light Blue Mix

    £8.40
    British Boxers British Boxers Women's "New York Turquoise Stripe" Crisp Cotton Short Sleeve Nightshirt
    British Boxers

    British Boxers Women's "New York Turquoise Stripe" Crisp Cotton Short Sleeve Nightshirt

    £45.39
    New Look Women's Red Cotton Ruched Thong New Look
    New Look

    New Look Red Cotton Ruched Thong

    £1.50
    EGO Arrie Clear Perspex Thong Strap Heeled Mule In Nude Patent, Women's Size UK 3
    EGO

    EGO Chic Nude Patent Thong Strap Heeled Mule in Beige

    £30.00

    Showing 120 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.