Italy is one of the leading countries in fashion design, alongside France and the United Kingdom. Fashion has always been an important part of the country's cultural life and society, and Italians are well known for their attention to dress. The concept of la bella figura, or good appearance, retains its traditional importance in Italian society. As such, Italian fashion brands are associated with the core values of Italianness or italianità, which consumers have embraced globally.

Italian fashion became prominent during the 11th to 16th centuries, when artistic development in Italy was at its peak. Cities such as Rome, Palermo, Venice, Milan, Naples, Florence, and Vicenza started to produce luxury goods, hats, cosmetics, jewelry, and rich fabrics. From the 17th century to the early 20th century, Italian fashion lost its importance and lustre, and Europe's main trendsetter became France, with the great popularity of French fashion; this is due to the luxury dresses designed for the courtiers of Louis XIV. Since the 1951–1953 period, fashion soirées held by Giovanni Battista Giorgini in Florence, the "Italian school" started to compete with the French haute couture, and labels such as Prada and Gucci began to contend with Chanel and Dior. In 2009, according to the Global Language Monitor, Milan, Italy's centre of design, was ranked the top fashion capital of the world, and Rome was ranked fourth. Although both cities fell in subsequent rankings, Florence entered as the 31st world fashion capital in 2011. Milan is generally considered to be one of the "big four" global fashion capitals, along with New York, Paris, and London; occasionally, the "big five" also includes Rome.

Italian fashion is linked to the most generalized concept of "Made in Italy", a merchandise brand expressing excellence of creativity and craftsmanship. Italian luxury goods are renowned for the quality of the textiles and the elegance and refinement of their construction. Many French, British, and American high-top luxury brands (such as Chanel, Dior, Hermès, and the main line of Ralph Lauren) also rely on Italian craft factories, located in highly specialized areas in the metropolitan area of Naples and in the centre-north of Italy (Tuscany, Marche, Veneto, Lombardy, and Piedmont), to produce parts of their apparel and accessories.

The nonprofit association that co-ordinates and promotes the development of Italian fashion is the National Chamber of Italian Fashion (Camera Nazionale della Moda Italiana), now led by Carlo Capasa. It was set up in 1958 in Rome, is now settled in Milan and represents all the highest cultural values of Italian fashion. This association has pursued a policy of organisational support aimed at the knowledge, promotion and development of fashion through high-profile events in Italy and abroad. The talent of young, creative fashion is also promoted in Italy, as in the annual ITS (International Talent Support Awards) young fashion designer competition in Trieste.

Examples of major Italian fashion houses focused on both menswear and womenswear, but also accessories:

Examples of major fashion brands which are specialized mainly at womenswear and also accessories for women are Laura Biagiotti, Blumarine (founded by Anna Molinari and now designed by David Koma), Capucci, Chiara Boni, Alberta Ferretti (now directed by Lorenzo Serafini), Gattinoni, Genny (designed by Sara Cavazza Facchini), Giamba (created by designer Giambattista Valli), Krizia (founded by Mariuccia Mandelli and now art directored by Zhu Chongyun), La Perla, Luisa Spagnoli, Max Mara (created by Ian Griffiths), Miu Miu (founded and directed by Miuccia Prada), Philosophy, Mila Schon, and Twin-set Milano, while the most important luxury houses which focus only on menswear and accessories for men are Brioni, Canali, Cesare Attolini, Corneliani, Lardini, Stefano Ricci, Zegna (directed by Alessandro Sartori), and Pal Zileri.

Luxury sportswear and streetwear have become general fashion trends, mixing high and low, formal and active style in one look and also in this segment Italy, apart from big luxury brands focused on ready to wear (or couture) developing their own streetstyle lines or items such as Gucci, Fendi, Moschino and Prada or brands with a strong sporty heritage like Bikkembergs, has got a few high end companies focused on this style like GCDS, OFF White founded by American Virgil Abloh but based in Milan, and Stone island. In sportswear, some of the most prominent houses are Diadora, Fila, and Kappa.

A few Italian designers head (or have headed) some important fashion brands outside Italy. Riccardo Tisci worked for French luxury house Givenchy for twelve years until 2017 and in 2018 was named British Burberry's creative director until 2022; Maria Grazia Chiuri after co-heading at Valentino together with Pier Paolo Piccioli (who is at the head of Balenciaga since 2025) was the first female creative director ever at Dior until 2025; French fashion brand Rochas had been directed by Alessandro Dell'Acqua for a few years and now by Alessandro Vigilante; Marco Colagrossi heads Ungaro after a few years under the directorship of Fausto Puglisi; Nicola Formichetti was artistic director at Mugler; Veronica Leoni is Calvin Klein Collection's director; Nino Cerruti founded his own Paris-based fashion house; Giambattista Valli's main ready to wear and high fashion lines are set in Paris and Stefano Pilati was for almost eight years Saint Laurent's head designer before creating an affordable clothing and accessories line for Zara in 2024.