Cara Delevingne was "saved" from her stress-induced psoriasis by Kate Moss

The London-born star shared: "I had no concept of saying no to anyone, ever.

"After a while I got sick and got a condition called psoriasis. I felt disconnected from myself, but my agency simply shoved me into a doctor's surgery, where I got cortisone shots, but - in reality - I wanted someone to stop me, but nobody did.

"I never felt like I was good enough, that I deserved success. I felt like I was living somebody else's dream. Kate Moss saved me - she stepped in and picked me up off the floor at a stressful time."

Cara, 23, subsequently turned to writing and yoga as a means of dealing with her stress.

The 'Paper Towns' actress said: "At that point I started writing and found yoga. At first I just did it superficially because I wanted to be flexible, but when I first started seeing my tutor I broke through something.

"We were both chanting and I suddenly burst into tears. I looked at him [the tutor] thinking he was a monster - an evil man - for making me cry. But he just laughed.

"See, it wasn't him at all, it was me. Now, we still practice together and I've evolved as a person."