Fashionable flying! Elle Macpherson, 52, stands out in chic overcoat and white pants as she struts through Melbourne airport

She's one of the world's most famous former supermodels.

So it's no surprise that at 52-years-old, Elle Macpherson still knows how to strut her stuff like no other.

The Sirens actress cut a fashionable figure as she made her way through Melbourne Airport on Saturday morning in a chic pair of loose white pants.

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Work it: Elle Macpherson looked stunning as she strutted through Melbourne Airport on Saturday morning

Elle paired the pants with a sophisticated navy turtleneck and hung a cream coat over her shoulders.

She opted for casual style with a pair of black sandals on her feet and hid her eyes behind a pair of aviator sunglasses.

Adding a subtle touch to the entire look, Elle painted her toenails white to match her pants.

Alright in white: The 52-year-old supermodel stunned in a pair of loose white pants 

Keeping warm: Elle wore a cream coat over her slender shoulders as she made her way through the terminal

Onlookers say that the tall beauty was at first surprised to be recognized so early in the morning, but was in good spirits and kept a smile on her face. 

The former friends star strutted her way through the terminal like it was a runway, and then posed for photos in the lounge.

The stunner has admitted that fad diets aren't for her, but she swears by her own health product, Super Elixir Alkalizing Greens, which she sells through her company WelleCo.

Elle told The New Potato that in addition to her incredibly healthy diet — which involves downing three whole liters of water every day — she credits maintaining an alkaline body with being the key to looking and feeling great.

All smiles: The Sirens actress pulled her navy turtleneck up to her chin as she smiled for onlookers

Travelling light? The occasional actress carried a zebra print bag with a scarf attached to it

Known as 'The Body', Elle has obviously always stuck to a healthy diet. She said breakfast on an 'ideal food day' includes fruit, chia seed pudding, oatmeal, or an egg on spelt toast, followed by espresso and almond cookies.

Lunch is fish and vegetables, and for a snack, she'll make a protein shake or lemonade with cayenne pepper, fruit, and almonds.

For dinner, she eats a plant-based protein salad with goat cheese or fish, followed by a bit of dark chocolate for dessert.

The model also drinks three liters of water spaced through the day. But despite a diet nearly devoid of fat and complex carbs, the Aussie stunner said that she still didn't feel her best a few years ago.

Wow! Elle looked like she was walking down the runway as she made her way through the airport 

Stay in your comfort zone: Just like the sign on the wall next to her, Elle stayed in her comfort zone by swapping heels for sandals 

'I started feeling run-down,' she said. 'I tried an array of supplements, but nothing seemed to do the trick. No matter what I did, I just couldn’t shake the feeling that something was off. That’s when I met Simone Laubscher, Ph.D., who specializes in the science of nutrition. She explained that there was one factor in my life that wasn’t balanced: my body’s alkalinity. 

Because her pH levels were 'off-kilter', her body wasn't working at its best. So the two got to work on designing a 'personalized blend of super greens' for her to skew her body toward alkaline.

'Ultimately, I’ve learned that an alkaline body and pH-neutral body is a healthier body,' she explained. 'Many people believe that it combats disease, encourages cellular renewal and therefore is anti-aging.'

Posing: Elle posed for onlookers in the airport lounge as if she was back on set of one of her famous photo shoots

Her secret? Elle credits maintaining an alkaline body with being the key to looking and feeling great

Elle wanted to bring this knowledge to other people, too, so she started her company, WelleCo, and launched its signature item: the Super Elixir, a vitamin and mineral-packed supplement that she herself takes every day.

'I feel that my body thrives now that I am taking the Super Elixir every day; my workouts are strong, I’ve lost weight around my waist, and my moods are balanced, I don’t have sugar cravings and I just feel on top of my game,' she said. 'In fact, now if I leave home without my green drink in the morning, I turn and go back – my body actually craves it.' 

The mix of super greens, Chinese herbs, digestive enzymes, and mushrooms is meant to help the digestive system, the endocrine (hormonal) system, and the circulatory and nervous systems.

Businesswoman: Elle swears by her own product, Super Elixir Alkalizing Greens powder

Elle also added that the elixir improves her skin, since it helps it hold moisture and promotes cell function.

'Complete cellular nourishment is what it's all about! That means love, nutrients, alkalinity, and water — support on a cellular level,' she said.

Last year, FEMAIL tested out her alkaline theory — and even tried Elle's daily urine tests — to see how well it worked.

'Complete cellular nourishment is what it's all about! That means love, nutrients, alkalinity, and water — support on a cellular level,' says Elle