Dancers at the <n>School of American Ballet</n> in New York, 1936. Photo by <n>Alfred Eisenstaedt</n>.

A still of <n>Cyd Charisse</n> in the 1957 film <n>Silk Stockings</n>.

<n>Hôtel Tassel</n> in Brussels, an <n>Art Nouveau</n> townhouse designed by architect <n>Victor Horta</n>.

<n>Roxane Stojanov</n> as <n>Myrtha</n> in the ballet <n>Giselle</n> for the <n>Ballet de l'Opéra National de Paris</n>. Photo by <n>Svetlana Loboff</n>.

Fancy dress costume by designer <n>Paul Poiret</n> for his <n>La Mille et Deuxième Nuits</n> party in 1911.

'Unposed, kind of' by photographer <n>Dilya Abdusalimova</n>.

Detail of the 1951 <n>Petal ball gown</n> by <n>Charles James</n>.

An <n>Art Nouveau</n> illustration by artist <n>Violet Moore Higgins</n>.

<n>The Four Seasons</n> (1897), a series of decorative panels by artist <n>Alphonse Mucha</n>.

An <n>Art Nouveau</n> door at 6 rue du Lac in Brussels, designed by architect <n>Ernest Delune</n> in 1904.

Performer <n>Liliane Gilbert</n> in <n>Julian Wylie</n>'s revue <n>Round in Fifty</n>, 1922.

<n>Portal Gates</n>, a 1974 sculpture by artist <n>Albert Paley</n>.

The <n>Isabel Shoe</n> by <n>Carel Paris</n>.

<n>Art Nouveau nautilus shell lamp</n> by <n>Albert Mayer</n> for <n>WMF</n>, circa 1900.

Fashion illustration by <n>Malcolm Strauss</n>.

<n>Sorbet</n> dress (1912) and <n>Casanova</n> dress (1920) by designer <n>Paul Poiret</n>.

<n>Paris winter fashion, 1912</n>, a photograph from the <n>Belle Époque</n>.

<n>Fairy With Iris Bleeding</n> (c. 1890), an <n>Art Nouveau</n> painting by <n>Alphonse Mucha</n>.

<n>Thistle</n> furnishing fabric designed by <n>Harry Napper</n> for <n>The Silver Studio</n>, c. 1897.

Vintage ballerina shoes by <n>Adidas</n>.

An <n>Art Nouveau</n> style claret jug created by <n>WMF</n> in 1906.

Image featured in <n>Sustainable Baddie</n>.

<n>Art Nouveau</n> ceramic panels by <n>Manufacture de Céramiques d'Art d'Hemiksem</n> on a Brussels building by <n>Arthur Nelissen</n>, 1905.

<n>Art Nouveau</n> stained glass window "<n>Spring</n>" (1894) by <n>Félix Gaudin</n> at the <n>Petit Palais</n> in Paris.

The <n>Art Nouveau</n> facade of the <n>Immeuble d'Alexandre Bigot</n> in Paris, designed by architect <n>Jules Lavirotte</n> for ceramist <n>Alexandre Bigot</n> in 1900.

The <n>Art Nouveau</n> <n>Casa Joan Fradera</n> in Havana, built in 1910. Photo by <n>Santi Man</n>.

A 1908 pochoir print by <n>Paul Iribe</n> from <n>Les Robes de Paul Poiret</n>, a portfolio of designs by <n>Paul Poiret</n>.

Illustration by <n>Helen Dryden</n> for the April 1, 1917 cover of <n>Vogue</n>.

The <n>Art Nouveau</n> bathroom at <n>Château Laurens</n>, decorated by <n>Eugène Simas</n>. Photo by <n>Guilhem Canal</n>.