Ippy and Gertie Posing at Fashion House Hirsch, Amsterdam is a circa 1916 oil on canvas painting by the Dutch artist Isaac Israëls.

It depicts the twin sisters Helena (1895-1964) and Geertruida Wehmann (1895-1975), models at the Amsterdam fashion house Hirsch & Cie [nl] in the Leidseplein whose professional names were Ippy and Gertie respectively.

Hirsch & Cie in Amsterdam continued until 1943, when it was forced to close as part of the Nazi policy of dispossessing Jews of their property during the occupation of the Netherlands.

[2] Christie's lot notes for its November 2012 sale of this painting observes that Isaac Israëls is the painter of modern life in fin-de-siècle Netherlands.

Following some early training at the Royal Academy of Art, The Hague, where he met George Hendrik Breitner (the two are credited as founding the so-called school of Amsterdam Impressionism), Isaac followed the examples of Johannes Bosboom and van Gogh and spent time in the Borinage, the Belgian mining district.

However the two fell out and Isaac began to shift his attention to the fashionable aspects of big city life, especially the London and Paris he was familiar with from an early age as a result of his travels with his cosmopolitan father.

This concern of Belgian origin had begun 1881 as a conscious effort to introduce French haute couture to The Netherlands, and by 1900 had developed into one of the leading fashion houses in Europe.

There their modelling talent was discovered and they went to work at the very fashionable Maison Lucile at 24 Burlington Street, whose clients included aristocracy, royalty, and theatre celebrities.