Daphne Selfe, the world’s oldest supermodel, agreed to pose as Madonna in her prime.

And if that were not enough, Daphne Selfe, 83, is wearing only the iconic conical bra and corset made by Jean Paul Gaultier for Madonna’s Blonde Ambition tour in 1990.

It’s a replica, but it’s still “terribly unforgiving. I thought they might have done a bit of airbrushing!” says Daphne Selfe, joking.

“I’m not that brave. I used to pose nude, you know, for artists including Barbara Hepworth.”

For a woman who has spent a lifetime in front of the camera, Daphne Selfe is surprisingly without vanity.

“So dreadful, which is why I normally wear long sleeves. My body is OK when I lie down, it settles rather. But, hey, what the hell, it was all for a good cause.”

The cause is Oxfam’s Big Bra Hunt. Apparently, the average woman in the UK owns nine bras, three of which she never wears. And while we readily donate clothes to charity, most of us don’t realize that women in developing countries need our bras, too.

But while we are all now aware that we should not send our clothes to landfill, it seems the fashion industry is still intent on treating its models as eminently disposable. Which is why Daphne Selfe is such a great figurehead (and body) for this campaign about longevity, and making women who are not, for whatever reason, inclined to shop in La Perla feel included.

“I’ve never had anything done to my face,” Daphne Selfe says, pulling it this way and that.

“Not that poison, not a facelift. I think it’s a waste of money. Anyway, I couldn’t afford it!”

Daphne Selfe, the oldest world’s supermodel, agreed to pose as Madonna in her prime

So how on earth does she do it, remain so fit, so lively in her slacks and flats, so amazing!

“I think it’s partly down to good genes. My mother was a livewire, she lived until she was 95. I’ve never really bothered with skin cream or anything like that, although I might use a bit of Boots. I hate anything you can’t take the top off and dig around for what’s left in the bottom.

“I did dye my hair at home for a while when I started to go grey in my early 40s. Occasionally, I would go into L’Oreal as a guinea pig, but it became too much of a bother.

“My hair is long now because it’s cheaper, I don’t have to do anything, but put it in a topknot or a French pleat. It avoids that old lady permed look, lengthens the neck and lifts the face. I’ve got so many friends who don’t touch the make-up pot. You should keep looking nice, it makes you feel so much better.”

Daphne Selfe looks beautiful, but so very different to today’s models: she has a tiny waist (“It was 24in, today it’s 27in! At least I haven’t got fat”), but rather chunky thighs, and wide shoulders.

“I would never have made it starting out today,” Daphne Selfe admits.

“I was too short, just 5ft 7in, with wide shoulders from all the riding I did as a young girl. But no one ever asked me to lose weight. Rationing was in place until 1954, so you were always grateful to get good food.”

Daphne Selfe grew up in Berkshire, UK, the daughter of a teacher, and was packed off to boarding school at eight. At the age of 20, working as a “shop girl in coats” in a Reading department store, she entered a local newspaper’s modeling competition and won.

“I’d been told I was nice looking a couple of times, but no, not really. I then started working steadily, it was wonderful.

“In those days, all models had training, we were shown how to walk and stand elegantly.

“I started off modeling fur, which in those days wasn’t controversial. I did mainly work as a house model, and a few advertisements. We were often photographed holding a cigarette, and I didn’t even smoke!

“But when I got married in 1954, I assumed I would never work again. My family came first. We weren’t well off, but that didn’t really matter. It’s dreadful women today have to work and can’t look after their families.”

Asked about what she thinks of fashion these days, Daphne Selfe said: “They don’t look in the mirror, do they? I do think women are too sloppy these days. No matter where I was going, I had a hat, and matching bags and shoes. Like all girls in those days I made the most of my own clothes. Not like models today, who seem to wear skinny jeans between shows. I always wore a roll-on corset. Never leggings! Just dreadful!”

Daphne Selfe has three children – Mark, 57, Claire, 53, and Rose, 51 – and although she soon got her figure back, she assumed motherhood meant the end of her modeling career.

“I fell out of fashion in the Sixties,” she says.

“I was what you called rather strapping, at 10½ stone! So I continued with a bit of acting work, and was an extra in films.”

Did she fear getting older, having worked as a model?

“It’s going to happen, so why worry? My generation got on with it. I do find people are always complaining these days. I try to remain cheerful, not grumpy. I’ve developed glaucoma, but the drops I have to put in my eyes have made my lashes grow! So there is always a plus side.

“I think it’s important to remain passionate about things. I’m going to a meeting later about saving our local church, and I’m off to France next week to see the village that is twinned with the one where I live in Hertfordshire. I garden, I walk a lot and I do yoga – my version of yoga, I don’t have time for classes.

“I can email! I’ve always worked, too, bits and pieces, right up until when my husband became very ill.”

Daphne Selfe’s husband, Jim, who worked in television, suffered a series of strokes.

“He was cantankerous. He got frustrated. He was all right with others, but at home he was not good!” says Daphne Selfe.

She cared for him full-time until he died in 1997, aged 72. But Daphne Selfe doesn’t dwell on the negatives.

“I couldn’t have done [modeling], could I? Looking after him, it would never have happened. I’ve been lucky.”

In 1998, Daphne Selfe was asked to appear on the catwalk for Red or Dead.

“I said: <<Ooh, goodie>>. I love wearing clothes and mucking about.”

The stylist suggested her to go to Vogue, who were creating a special issue about age.

“I think they needed someone to represent <<ancient>>,” Daphne Selfe says modestly.

That photograph, taken by Nick Knight, led to her being signed up by Models 1.

Does she feel, over a decade later, that she is still the token older woman rather than an ideal of beauty?

“Oh no, I don’t think so. I’m doing more high fashion now than I did as a young woman, I think because at last I’ve lost the puppy fat! You can see the bones in my face. I’ve worked with Mario Testino, he was so kind, and Rankin – I knew his parents, both dead now – and Dolce & Gabbana.

“I’m always working in Paris, quite often with designer Fanny Karst, who does wonderful clothes for the elderly. I find you have to be fit to brave Primark, but I do shop there.

“I tend to wear all the clothes I have in my wardrobe from decades ago: every style seems to come round again. The only thing I can no longer wear is high heels, my feet have vasculitis, a weakness and numbness. But from my ankles up I’m OK.”

How do the younger models treat her?

“They are so lovely to me. They tell me they want to look like me when they get older. But they are babies.”

Was the fashion world nicer in her day?

“I imagine there were drugs, and alcohol. But I was so innocent, I never noticed that.”