Out dated images in Model profiles

I have a casting up which is a Paid shoot for a Glamour Fashion Model

I received a communication from one Model who was very interested in the concept.

Having looked at her profile  which shows the last images she posted was a year ago so I asked if she had any recent images I could see.

The said model has been active on the site a couple of time, yet fails to reply to my communication.

I can not understand why any Model has not got a recent image within their profile.

A Models looks and hair style can change over a year,  If I boked her on her last image and she arrived with a totally different look. I'm sorry to say the shoot would not go ahead.