What is going on here then? Presumably this photograph was taken in order to show the detailing on the back of the dress. Is it particularly remarkable? I thought it had a rather theatrical look about it.
I have only found two references to Margate based photographers called Edward Cox (note the name embossed into the bottom right hand corner of the photograph). The “Footlight Notes” blog features a photograph of the Chase Me theatrical review, taken by a Edward Cox. The theatrical company are shown outside their boarding house in Margate in 1914.
The other reference was on the Margate Roll of Honour, published by the Margate Civic Society. A Aircraftman 2nd Class, Eric Edgar Cox, RAF was called up for military service during the Second World War and died after ten days service having suffered from ill health for some time. He is listed as a partner in a photographic studio on Sweyn Road, founded by his father, Edward Cox. It also mentions that Edward Cox was the official photographer for the Dardanelles Commission, founded in 1916 to investigate the failure of the Gallipoli Campaign during the First World War.