From muddy jeans, bare butt jeans, diaper cut-out jeans to the latest see-through jeans and crotchless jeans, denim designers have once again wowed many with their wild take on the popular fabric.

The crotchless jeans retail at £450 (S$795.20). Photo by: Y Project

Released by Y Project, a Parisian brand known for its outlandish designs, crotchless jeans feature 2 denim trouser legs held up at the waist by suspenders with the crotch area exposed.

Topshop’s clear plastic jeans are now sold out. Photo by: Topshop

British fashion house Topshop has also recently launched what they call the clear plastic straight leg jeans. The see-through jeans feature classic pocket detailing with trouser legs cropped at the anklebone. Not that this matters very much though. The entire lower body will be exposed anyway if the jeans aren’t worn with an oversized top or shorts.

“Honestly, I think it’s unique. Would I wear it now? Most probably not. But do I hate it? No. I actually think it’s quite cool and if this trend is something that follows on over the years I might just try them,” said Ngee Ann Polytechnic student Genevieve Lee, 19, about the crotchless jeans.

But clearly not every one feels that way.

“It’s a very weird trend, I don’t get it. Why would anyone choose to wear anything that looks like that?” said Sarah Wee, 18, a Ngee Ann Polytechnic student.

While the bold designs may not be everyone’s cup of tea, denim is still a wardrobe staple for many Singaporean youth.

A survey conducted by The UrbanWire in May 2017 found that close to 40 per cent of 120 respondents aged 16 to 21 years old wear denim 2 to 4 times a week.

Here’s a look at the popular denim styles over the decades.

70s Denim

Popular in the 70s were the flared jeans. Also known as bell-bottoms, these wide-legged pants were often paired with platform shoes. According to British news website, Daily Mail Online, this style replicates what is better known now as fishtail, where the pants is fitting at the top and leads to a flare at the bottom.

80s denim

Studded denim jackets and jeans started making their way to the streets. Photo by: Stocksnap.io

The 80s was the decade for the bold and adventurous with denim taking an edgier vibe. Studded, distressed and acid-washed jeans came into style after they were popularized by Madonna.

90s denim

Frays at the hem of the jeans were a minimalistic, yet popular look. Photo by: Stocksnap.io

Denim in the 90s was all about achieving that casual, effortless look as the ‘cool kid in school’ in his iconic frayed and multi-button jeans.

“No one liked to look too serious. Wearing denim was seen as being rebellious. It challenged the idea of looking well put together with a casual touch,” said Ms Evon Chng, a former fashion stylist for Her World magazine.

2000s denim

In the 2000s, the double-denim style made a comeback – and a fashion statement. Photo by: Tan Jun Da

The double-denim trend – a combination of denim jeans paired with a t-shirt and a denim jacket – was widely popular in the 2000s. First introduced in the early 70s, the trend had a huge following, including celebrities such as Bella Hadid and Miranda Kerr.

2010s denim

Ripped jeans remain a favorite with many. Photo by: Tan Jun Da

Oversized and loose jeans gave way to skinny or fitted jeans in this decade.

We’ve also ushered in a much wider variety of styles, from the retro flared jeans, high-waisted jeans to heavily ripped jeans. To spice things up, some also wear net leggings beneath their ripped jeans to rock the look.

While denim trends have evolved over the years, one thing remains the same: denim is always in style.

Ms Julia Blank, an image consultant based in Singapore said: “Denim has never gone out of fashion.

“There is no need to rely on a comeback. Denim is immortal.”