A model release form signed by US musician Madonna and showing a modelling fee of $30 is displayed in a gallery in Central London on July 1, 2009. Madonna posed for black and whites at the age of 20, when she was modelling in New York to pay her way through dancing school, and seeking her first big break in the music business. Getty Images logo Getty Images 8 months ago

A model release form signed by US musician Madonna and showing a modelling fee of $30 is displayed in a gallery in Central London on July 1, 2009. Madonna posed for black and whites at the age of 20, when she was modelling in New York to pay her way through dancing school, and seeking her first big break in the music business.