'Fashion's top 10 "hottest" products have been revealed, but would you wear them? I have thoughts.'

As of now, a pair of rubber thongs is officially fashion's most in-demand item.

The Lyst Index gathers data from what people are shopping and searching for across the globe, and every quarter, they release a list of the 10 key styles that are trending and tracking.

Coming in at number one on the list is the Dune Classic Rubber Flip Flop from Mary Kate and Ashley Olsen's high-end brand The Row.

Watch Leigh Campbell demonstrate the 'wrong shoe theory'. Post continues below.

These babies will set you back a cool $1255, but that's only if you can get your hands on them — the style continues to sell out online, such is the demand for the controversial shoe.

Hailey Bieber was the first celebrity to be snapped in the flip flops back in April, when she wore them with Pilates gear in LA.

They looked like the kind of basic thongs you might pop on after a pedicure.

Since then, the Dune — which comes in beige or red with black straps — has been seen on stylish A-listers including Jennifer Lawrence, Dakota Johnson, Zoe Kravitz, Elizabeth Olsen and Kendall Jenner, as well as stacks of influencers.

It's quite a fan-base for what could literally be the world's most expensive pair of thongs.

But these are not just thongs. They're a fashion flex.

The spendy thongs are currently sold out on most luxury retailers, such as MyTheresa. Image: MyTheresa.

The Row is no flash-in-the-pan celebrity fashion line. The Olsen sisters have now been running their high-end label for close to 20 years, and its success is a credit to their hard work in a fickle industry.

The duo have largely remained behind the scenes and allowed their designs to do the talking.

The brand has earned favour with top fashion critics, taken home awards from the Council of Fashion Designers of America, and earned a huge cult following — and they've have done it all without flashy marketing gimmicks or paying A-list ambassadors.

Ashley and Mary-Kate Olsen, the celebrity designers behind The Row. Image: Getty.

Where other designers are creating luxury goods covered in splashy logos — a way of telling others you're in the market to buy them — The Row trades in whisper-quiet luxury. And it's this subtle secret sauce that's always set them apart.

That is, until now. When a pair of rather loud $1200 thongs took over the world.

So what else is on the Lyst Index's ranking of the 10 hottest items in fashion?

Let's take a look.

#2: Skims Tank Top.

Image: Supplied.

Kim Kardashian's basics brand is known for its well-made wardrobe staples, and white tank tops are a major styling trend — so this makes a whole lot of sense.

#3: Adidas Adicolor Classics Sprinter Shorts.

Image: Supplied.

Retro sport shorts have been resurfacing on social media of late, but after Zoe Kravitz was seen wearing an Adidas pair with heels, searches for the style skyrocketed.

#4: Miu Miu Suede Loafers.

Image: Supplied.

You'd have to be hiding under a rock to have missed the brown suede moment that's infiltrated the accessory market.

Miu Miu's era-defining loafers are on every fashion girlie's wish list this season.

#5: Vibram V-Soul Flats.

Image: Supplied.

This one might come as a surprise, because toe shoes don't exactly scream style. But Vibram's original "five-finger" running flats keep selling out.

Lyst puts it down to a rising trend for "freaky footwear", and you don't get much freakier…

#6: Ancient Greek Sandals Natural Iro Ballet Flats.

Image: Supplied.

You've definitely seen those jelly mesh ballerina flats around — they trickled down from a famous style by The Row.

These ones are slightly more accessible at $350, and the jewelled embellishments make them even more covetable.

#7: Juju Vera White Petra Shell Pendant.

Image: Supplied.

New York designer's Juju Vera's silver pendant necklace has become THE jewellery item to be seen in among fashion types. Get ready for lots of high street versions.

#8: Isabel Marant Bekett Hidden Wedge High Top Sneaker.

Image: Supplied.

Millennials might remember this nostalgic wedge sneaker from when it first hit the runway in the mid-noughties, then proceeded to be everywhere.

Now it's back, with demand for the style up 630 per cent according to Lyst.

#9: Faithfull The Brand Hedy Strapless Maxi Dress.

Image: Supplied.

It's a source of national pride to see an Australian label make the list.

Faithfull The Brand's Hedy dress is a perfect fusion of the silhouette and colours of the moment, and it's due for a restock in all sizes soon.

#10: Prada Collapse Re-Nylon And Suede Sneakers.

Image: Supplied.

Ballet shoe-sneaker hybrids, or "sneakerinas", snuck onto the style scene earlier this year, and Prada's pink collapsible version is the pinnacle of the look.

It's made from 100 per cent recycled materials, because sustainability is chic.

See more from the Lyst Index rankings here.

Feature image: Instagram/@lauravidrequin; @laurenratner; @jessiebush.

This post originally appeared on the Substack 'Fash Chat' and has been edited and updated for currency. For more from Tamara, sign up to the newsletter or read her articles here.