
Indian tourists come to Kashmir and dress up in "traditional Kashmiri clothing" to have their pictures taken. Photographers on shikaras or at one of the gardens give them scarves to put on their heads, plastic flowers and clay pots to hold, and then they take pictures like this.
Or like this one taken by Tim Fitzsimons.
The real tradition, I think, is the one of Indian tourists wanting this to be something they do during their trip to Kashmir, and a picture to take home to show the relatives.