LONDON:Cara Delevingne asked Kate Moss for advice on dealing with a skin condition.  The young supermodel suffers from psoriasis - an auto-immune disease which causes scabs to appear on the skin - and was left distraught when it flared up during a recent Fashion Week.  Cara told the W magazine: ‘’It only happened during Fashion Week. Which is, of course, the worst time of the year for me to be covered in scabs.  ‘’Kate Moss saw me before the Louis Vuitton show at 3am, when I was being painted by people to cover the scabs. She said, ‘This is horrible! Why is this happening? I need to help you.’–EP