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Warm & Wonderful

Warm & Wonderful is a British knitwear brand best known for its black-sheep sweater, famously worn by Diana, Princess of Wales.

Last updated August 31, 2026

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Overview

Warm & Wonderful is a British fashion label specializing in knitwear and distinctive graphic sweaters. Joanna Osborne and Sally Muir founded the brand in 1979 after beginning to sell their designs from a market stall in Covent Garden, London. Both founders are professional artists—Osborne a sculptor and Muir a painter—and their artistic background shaped the label’s early emphasis on humor, visual storytelling, and unusual textile graphics. Among the early designs were a sweater resembling a brick wall, which customers could personalize with knitted graffiti, and a grass-green jumper decorated with rows of white sheep interrupted by a single black sheep. The black-sheep design became the brand’s signature. Osborne and Muir have explained the motif as a reflection of their own identification with the idea of being different from the surrounding group. The design also offered a simple, memorable image that could be reproduced in different colors and products. It attracted a following among London’s fashionable Sloane Ranger set, artists, entertainers, and public figures. Reported wearers over the years have included David Bowie, Andy Warhol, Shelley Duvall, Penelope Keith, Anthony Andrews, and Diana, Princess of Wales. The brand’s defining publicity moment came in 1981, when Lady Diana Spencer wore a red Warm & Wonderful sheep jumper. International press coverage made the sweater widely recognizable, and commentators interpreted the lone black sheep as a possible metaphor for Diana’s position within the Royal Family. Diana wore the sweater again in 1983, generating another wave of media interest. The association with Diana transformed what had been an independent British knitwear design into an enduring fashion and cultural reference. Warm & Wonderful has offered more than the famous sheep jumper. Its historical range has included other humorous or country-themed graphic knitwear, as well as plain Shetland, cashmere, and cotton garments. Accessories and non-knitwear items have also used the sheep motif. Over time, the label’s products were sold through prominent British, American, French, and Japanese retailers, including Liberty, Saks, Henri Bendel, Barneys, Bergdorf Goodman, Neiman Marcus, Isetan, Mitsukoshi, and Le Bon Marché. Osborne and Muir also operated shops in Wandsworth, Primrose Hill, and Brighton, later returning near the original Covent Garden location through a Seven Dials pop-up in 2021. The label was revived from 2020 through a partnership between the founders and American designer Jack Carlson. The original sheep sweater was brought back after more than two decades, initially through a collaboration with Rowing Blazers, before Warm & Wonderful was re-established as an independent brand with Carlson as creative director. The revival connected the archival design with contemporary fashion audiences and led to coverage in publications including Vogue, ELLE, The Telegraph, The Times, Tatler, Harper’s Bazaar, People, the Financial Times, Town & Country, Vanity Fair, and The New Yorker. Subsequent collaborations with Globe-Trotter and Sperry expanded the sheep motif into luggage, handbags, and canvas footwear. The black-sheep sweater has also entered cultural and institutional collections. Emma Corrin wore the design while portraying Diana in the Netflix series The Crown, and the Victoria and Albert Museum holds a Warm & Wonderful sheep jumper in its permanent collection. In 2023, an original sweater worn by Diana sold at Sotheby’s in New York for $1.14 million, according to the cited reference, setting a record for the most valuable sweater sold at auction. Warm & Wonderful therefore occupies a distinctive position at the intersection of British independent fashion, celebrity dressing, royal imagery, design nostalgia, and collectible fashion history.

History

Warm & Wonderful began in London in 1979, when artists Joanna Osborne and Sally Muir started selling hand-designed jumpers from a market stall in Covent Garden. Their artistic practice informed a range of knitwear that treated the sweater as a canvas for humorous and highly visible imagery. Early pieces included a brick-wall sweater that could be customized with knitted graffiti and a green jumper decorated with white sheep and one black sheep. The black-sheep motif became the label’s defining design. The founders connected the image with their own experience as artists and with the idea of standing apart from a larger group. Although the design was playful, it was also unusually adaptable: it could appear in different garment colors and later be transferred to accessories and other products. The sweater gained attention among fashionable London customers and was worn by a number of artists, entertainers, and public figures. Warm & Wonderful’s international profile changed dramatically in 1981 when Lady Diana Spencer wore a red version of the sheep jumper. Press photographs circulated around the world, and the design became associated with Diana’s public image. Commentators speculated that the single black sheep might represent a feeling of difference within the Royal Family. Diana wore the jumper again in 1983, renewing attention to the label and making the sweater one of the best-known examples of celebrity-linked British knitwear. The brand developed a broader product range alongside the sheep sweater. It produced additional graphic and country-themed designs, solid-color Shetland, cashmere, and cotton knits, and sheep-themed accessories. Its products reached major department stores and specialist retailers in the United Kingdom, United States, France, and Japan. The founders also operated shops in several London and southern English locations, including Wandsworth, Primrose Hill, and Brighton. In 2020, American designer Jack Carlson joined Osborne and Muir in reviving the label. The first stage involved bringing back the original sheep sweater after a period of more than twenty-five years, initially in collaboration with Rowing Blazers. Warm & Wonderful was subsequently re-established as a standalone brand, with Carlson serving as creative director. The revival placed the archival design within the contemporary fashion market while preserving the founders’ original visual identity. The revived label broadened the sheep motif through collaborations with Globe-Trotter in 2021 and Sperry Top-Sider in 2022. These projects extended the brand into luggage, handbags, and footwear. Its cultural visibility was also reinforced by fashion-media coverage, the appearance of a Warm & Wonderful sweater in The Crown, and the inclusion of a sheep jumper in the Victoria and Albert Museum’s permanent collection. In 2023, Sotheby’s offered an original Diana-worn sweater in New York. It sold for $1.14 million, a result reported as a record for a sweater at auction. The sale demonstrated the commercial and cultural durability of the design more than four decades after its creation. Warm & Wonderful remains associated with British independent fashion, graphic knitwear, Diana’s public wardrobe, and the modern revival of archival labels.

  • 2023

    Diana-worn sweater sets an auction record

    [1]

    A Warm & Wonderful sweater worn by Diana sells at Sotheby’s for $1.14 million and is reported as the most valuable sweater in auction history.

  • 2022

    Sperry collaboration

    [1]

    The sheep motif is applied to canvas sneakers through a collaboration with Sperry Top-Sider.

  • 2021

    Globe-Trotter collaboration

    [1]

    Warm & Wonderful and Globe-Trotter release sheep-motif luggage and handbags.

  • 2021

    Seven Dials pop-up

    [1]

    The brand opens a London pop-up close to the Covent Garden location of its original market stall.

  • 2020

    The label is revived

    [1]

    Jack Carlson works with Osborne and Muir to return the original sheep sweater and rebuild Warm & Wonderful as an independent label.

  • 1983

    Diana wears the sweater again

    [1]

    Diana wears the Warm & Wonderful sheep jumper for a second widely reported appearance.

  • 1981

    Diana wears the red sheep sweater

    [1]

    Lady Diana Spencer wears a red Warm & Wonderful sheep jumper, bringing extensive international media attention to the design.

  • 1979

    Warm & Wonderful is founded

    [1]

    Joanna Osborne and Sally Muir begin selling their artist-designed jumpers from a market stall in Covent Garden, London.

Products and positioning

A heritage British knitwear label combining artist-designed graphics, playful British character, royal and celebrity associations, and contemporary archival revival.

  • Graphic knitwear · 1979

    Black-sheep sweater

    Warm & Wonderful’s signature design places a single black sheep among white sheep on a knitted field. First developed in the early period of the label, it became internationally famous after Diana, Princess of Wales, wore a red version in 1981 and again in 1983. The design has been reissued in multiple colorways and remains the central product and visual symbol of the brand.

  • Graphic knitwear · 1979

    Graphic and country-themed jumpers

    The label’s wider knitwear history includes humorous graphic sweaters and designs drawing on rural or country imagery. An early example resembled a brick wall and allowed customers to add knitted graffiti, illustrating the founders’ interest in turning clothing into interactive, illustrated objects.

  • Knitwear

    Shetland, cashmere, and cotton knitwear

    Alongside its graphic designs, Warm & Wonderful has produced more understated knitwear in materials including Shetland wool, cashmere, and cotton. These products broaden the label beyond its most recognizable novelty sweater while retaining its British knitwear heritage.

  • Luggage and handbags · 2021

    Globe-Trotter collaboration

    The 2021 collaboration with British luxury luggage maker Globe-Trotter translated Warm & Wonderful’s sheep graphic into travel goods, including luggage and handbags.

  • Footwear · 2022

    Sperry collaboration

    The 2022 partnership with heritage footwear company Sperry Top-Sider used the Warm & Wonderful sheep identity on canvas sneakers, extending the motif into casual footwear.

Marketing campaigns

  • 2022Warm & Wonderful x Sperry

    United States · United Kingdom · International

    Warm & Wonderful and Sperry Top-Sider created canvas sneakers featuring the sheep design.

    Outcome. The project extended the revived label’s graphic language into footwear.

  • 2021Warm & Wonderful x Globe-Trotter

    United Kingdom · International

    The partners applied the sheep motif to Globe-Trotter luggage and handbags, linking British knitwear heritage with luxury travel goods.

    Outcome. The collaboration expanded the brand beyond apparel.

  • 2020Original Sheep Sweater Relaunch

    United Kingdom · United States · International

    Warm & Wonderful returned its original sheep sweater to the market after more than twenty-five years, initially working with Rowing Blazers and designer Jack Carlson.

    Outcome. The relaunch helped re-establish the label and created the foundation for a broader contemporary revival.

Brand decisions

  • 2022

    Extend the sheep motif into footwearProduct launch

    Background

    The revived label continued to develop products outside traditional knitwear.

    Action taken

    Warm & Wonderful partnered with Sperry Top-Sider on canvas sneakers featuring the sheep motif.

    Aftermath

    The collaboration broadened the brand’s apparel and accessories proposition.

  • 2021

    Extend the sheep motif into luxury travel goodsProduct launch

    Background

    Following the brand revival, Warm & Wonderful sought to apply its recognizable graphic identity beyond sweaters.

    Action taken

    The brand collaborated with Globe-Trotter on luggage and handbags.

    Aftermath

    The sheep design entered an additional luxury-goods category.

  • 2020

    Rebuild Warm & Wonderful around its archival signatureStrategy

    Background

    The label’s black-sheep sweater retained strong cultural recognition because of its association with Diana, Princess of Wales, despite the design having been absent from the market for more than two decades.

    Action taken

    Joanna Osborne and Sally Muir partnered with Jack Carlson to relaunch the original sweater, first through Rowing Blazers, and then to re-establish Warm & Wonderful as an independent brand.

    Aftermath

    Carlson became creative director, and the label pursued new collaborations and renewed media exposure.

Recent events

  • 2023

    Diana’s Warm & Wonderful sweater sells for $1.14 million[1]

    Other · Pricing

    An original Warm & Wonderful sweater worn by Diana, Princess of Wales, sold at Sotheby’s in New York for $1.14 million, reportedly making it the most valuable sweater sold at auction.

  • 2022

    Warm & Wonderful collaborates with Sperry[1]

    Product launch

    A collaboration with heritage footwear company Sperry Top-Sider applied the Warm & Wonderful sheep identity to canvas sneakers.

  • 2021

    Warm & Wonderful opens a Seven Dials pop-up[1]

    Other

    The brand opened a temporary London shop near Covent Garden, the area where the founders had originally sold their knitwear from a market stall.

  • 2021

    Warm & Wonderful collaborates with Globe-Trotter[1]

    Product launch

    The knitwear label partnered with British luxury luggage maker Globe-Trotter on luggage and handbags featuring its recognizable sheep motif.

  • 2020

    Warm & Wonderful returns with its original sheep sweater[1]

    Product launch

    The label was revived through a partnership involving founders Joanna Osborne and Sally Muir and designer Jack Carlson. The original sheep sweater returned after more than twenty-five years, initially through a Rowing Blazers collaboration.

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