The 43-year-old 'The Face' mentor said the secret to her slim body and healthy glow is juice, reported Us magazine.
"For ten days prior to the Versace show, I just drank juice -- carrot, ginger, pineapple -- to cleanse.
"I don't want to build muscle, just to tone. I'm not extreme about what I eat - I let chocolate and crisps (potato chips) come in. You just have to allow the little things that make you happy," she said.
"I was quite stunned at the reaction -- I remember the room being quiet and I thought, 'Oh my God, they don't want me here!'
"It was emotional for me to do the show after 14 years. I knew about it for months and couldn't tell anyone. When I did my fitting in those amazing clothes, it was just overwhelming," she added.