Twiggy isn’t “upset” about getting older and would rather focus her energy on being positive about what she is. The 68-year-old model would rather “celebrate” her age and maintain a positive attitude than “waste energy” worrying about the passing of time. She said: “There’s no point feeling upset. “That would be a waste of energy and is counter-productive. “There’s nothing you can do about it, so you might as well celebrate your age.

“Be positive and think, ‘I’m lucky to be here and to have such a wonderful family.’ “

And Twiggy – who has daughter Carly, 39, from her first marriage to the late Michael Witney and is now wed to Leigh Lawson – refuses to change the way she dresses because of her age, a principle she has embraced when designing for Marks & Spencer, who she’s had a line with since 2012. She said: “My philosophy from day one has been that I don’t design for women in their 60s, I design for all women. “I’ve never gone along with fashion restrictions and hate it when people tell you what you should and shouldn’t wear at a certain age. “Carly is 30 years younger than me yet we wear the same jeans, tops and jackets.”