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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 "New York Turquoise Stripe" Crisp Cotton Strappy Nightdress
    British Boxers

    British Boxers Turquoise Stripe Cotton Strappy Nightdress

    £45.39
    EGO Aspen Gem Thong Strap Detail Heeled Mule In White Faux Leather, Women's Size UK 3
    EGO

    EGO Gem Thong Strap Detail Heeled Mule in White

    £27.00
    New Look Women's Light Yellow Floral Lace Thong New Look
    New Look

    New Look Light Yellow Floral Lace Thong

    £5.99
    Marks & Spencer M&S 3pk Jasmine Lace High Waisted High Leg Knickers Geranium
    Marks & Spencer

    M&S Geranium Lace High Waisted Knickers 3-Pack

    £10.00
    British Boxers British Boxers Women's "French Navy" Cotton Zip-up Hoodie in Dark Navy
    British Boxers

    British Boxers Dark Navy Cotton Zip-up Hoodie

    £41.06
    EGO Jayda Strappy Thong Kitten Heel In Black Faux Leather, Women's Size UK 3
    EGO

    EGO Strappy Thong Kitten Heel in Black

    £27.00
    New Look Women's Dark Brown Polka Dot Microfibre Lace Brazilian Briefs New Look
    New Look

    New Look Dark Brown Polka Dot Microfibre Lace Brazilian Briefs

    £3.99
    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
    British Boxers British Boxers Women's 'Montrose' Check Brushed Cotton Dressing Gown
    British Boxers

    British Boxers Multicolor Check Brushed Cotton Dressing Gown

    £79.69
    EGO CAVE KH, Women's Size UK 3
    EGO

    EGO Elegant Over-the-Knee Boots in Green

    £48.00
    New Look Women's White Daisy Mesh Thong New Look
    New Look

    New Look White Daisy Mesh Thong

    £3.49
    Marks & Spencer M&S 3pk Jasmine Lace High Waisted High Leg Knickers Khaki
    Marks & Spencer

    M&S Khaki Lace High-Waisted Knickers 3-Pack

    £10.00
    British Boxers British Boxers Women's "Acorn Squash" Check Brushed Cotton Pyjama Set in Teal
    British Boxers

    British Boxers Teal Check Brushed Cotton Pyjama Set

    £39.10
    EGO SATIN LACE TRIM BUTTON DOWN BOXER SHORT IN BLACK, Women's Size UK 6
    EGO

    EGO Satin Lace Trim Boxer Short in Black

    £12.00
    New Look Women's Pink  Cotton Ruched Thong New Look
    New Look

    New Look Pink Jersey Ruched Thong

    £2.99
    Marks & Spencer M&S 3 Pack Cotton Rich Dipped Miami Knickers Opaline Mix
    Marks & Spencer

    M&S 3 Pack Cotton Rich Miami Knickers Opaline Mix

    £8.00
    British Boxers British Boxers Women's "Breezy Blue Satin Stripe" Crisp Cotton Pyjama Trousers in Baby Blue
    British Boxers

    British Boxers Baby Blue Striped Cotton Pyjama Trousers

    £38.68
    EGO Flex-Appeal Thong Strap Heel Mule In Brown Woven, Women's Size UK 7
    EGO

    EGO Flex-Appeal Thong Strap Heel Mule in Brown

    £25.00
    New Look Women's Black Ribbed Embroidered Cherry Thong New Look
    New Look

    New Look Black Ribbed Cherry Thong

    £6.00
    Marks & Spencer M&S 5pk Pure Cotton High Leg Knickers Orange Mix
    Marks & Spencer

    M&S 5pk Pure Cotton High Leg Knickers Orange Mix

    £8.00
    British Boxers British Boxers Women's "Schoolhouse Blue" Gingham Crisp Cotton Strappy Nightdress in Light Blue
    British Boxers

    British Boxers Light Blue Gingham Cotton Strappy Nightdress

    £50.37
    New Look Women's Oatmeal Rib Lace Thong New Look
    New Look

    New Look Oatmeal Rib Lace Thong

    £6.99
    Marks & Spencer M&S 2 Pack Ida Lace High Waisted High Leg Knickers Blue Tint
    Marks & Spencer

    M&S Blue Tint Lace High Waisted Knickers 2-Pack

    £12.00
    British Boxers British Boxers Women's "Breezy Blue Satin Stripe" Crisp Cotton Strappy Nightdress in Baby Blue
    British Boxers

    British Boxers Baby Blue Striped Cotton Nightdress

    £47.01

    Showing 120 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.