Twiggy has never felt comfortable wearing "frilly dresses"

She told Defined magazine: "'I've always worn trousers. If you look at pictures from 1966, '67, '68 - apart from what I wore as a model for magazines - my own clothes were trousers. I used to go to Tommy Nutter and have boys' suits made. I look better in trousers.

"When I was very young, I didn't have a girly figure. I felt uncomfortable in frilly dresses. They just weren't my thing. I liked mini skirts with boots - more funky.

"I wouldn't wear mini skirts now at my age, but trouser suits are fabulous, worn with a great top, or a leather jacket. I feel more comfortable that way than donning a dress."

When it comes to keeping fit, Twiggy credits Pilates and a healthy diet with staying youthful.

She said: "I'm not fanatical, but I've always done some form of exercise. For the last 20 years it's been Pilates - I swear by it.

"I eat well. I believe you are what you eat. Lots of greens, salmon, organic when I can. And dark chocolate - I was very happy to read that it's good for you!"

Meanwhile, the supermodel insisted she has no plans to retire, and she'd rather find a new job instead of stopping work completely.

She added: "No. I don't think completely retiring is a good idea. If you stop one job, take up another interest.

"I'm lucky because I love what I do - modelling, designing, acting, singing. I'm working with Amy Wadge on some music. We've done about four tracks.

"Singing is good for everybody - it's good for your soul. And over the last year I've been travelling around Britain and Europe promoting the Twiggy documentary that was directed by Sadie Frost; it's been a wonderful experience because I've had such wonderful feedback."