Princess Irene Galitzine (Georgian: ირინა გალიცინი; Russian: Ирен Голицына; 22 July 1916 – 20 October 2006) was a Russian-Georgian fashion designer whose best known creation was the palazzo pyjama.

[2] After studying art in Rome, English at Cambridge and French at the Sorbonne, Galitzine joined the Italian designers Sorelle Fontana in 1943[2] and worked with them for 3 years.

In 1960, she achieved great success with the launch of her palazzo pyjamas which were wide legged evening trousers made of soft silk.

[4] Since then, her creations have been worn by some of the most famous women in the world such as Sofia Loren, Elizabeth Taylor, Lee Radziwill, Jacqueline Kennedy Onassis, Princess Ira von Fürstenberg, Queen Paola of Belgium, Queen Anne-Marie of Greece, Marie-Hélène de Rothschild, Duchess of Windsor, Soraya Esfandiary-Bakhtiari, Merle Oberon, Audrey Hepburn, Hope Portocarrero, Marella Agnelli, Greta Garbo, Catherine Spaak, Pamela Churchill Harriman and Claudia Cardinale.

[2] Irene Galitzine was married in 1949 to Silvio Medici de Menezes, an aristocrat from Portugal.