Cast your mind back to the summer of 2015.

Jason Derulo and Fetty Wap were dominating the charts, Jeremy Clarkson was in hot water for punching TV producers, Queen Elizabeth II became the longest-reigning monarch in British history, and 'the dress' took the internet by storm.

Remember that infamous dress that left social media users in a frenzy for days, with some Facebook users seeing it as 'black and blue' while others insisted it was 'white and gold'?

The uproar turned the Roman Originals dress into an internet sensation, highlighting the variances in human colour perception. It even became the focal point of numerous vision science studies and discussions.

Well, it appears there's a new perplexing garment capturing attention.

A Primark top has ignited a similarly heated debate online this week, with viewers claiming to see it in a variety of different colours.

The Primark top originally appeared to be various shades of blue (Reddit)

Sharing their experience on Reddit, the purchaser of the £9 top mentioned they had ordered it from second-hand retailer Vinted, thinking it was a blend of blues, greens, and paisley-style patterns.

"I ordered what I thought was a top in purple/blue shades," they noted online. "But what arrived was pink. The seller claimed it was due to the lighting in the photo."

The buyer then posted an image of the crop-top they received, which was clearly an array of pinks, oranges, and yellows - a completely different colour scheme.

"Why can't people capture accurate photos?" they wondered.

Much like the blue/black or white/gold dress, the starkly contrasting images stirred quite the commotion online.

The top appeared completely different (Reddit)

"Wow, it looks entirely different," one user commented.

Another remarked: "I can't even fathom how a top that pink could possibly appear blue/purple.

"It's just like the blue and black dress."

Naturally, it wasn't long before a slew of internet experts attempted to offer explanations for the mystery.

"I’m guessing she might have a blue curtain or blind. It's a total catfish," one user speculated in the comments.

Another concurred: "I think you can see the reflection of the curtains in the hanger on the right."

"It's all about the white balance," suggested a third. "It's a poor showing from the seller, but you could have noticed the label, which should be white, appears blue. You could have adjusted the white balance to see the top's true colours.

This viral dress broke the internet in 2015 (Tumblr)

"You shouldn't have to, but it's clear the picture is misleading."

They continued: "Or you could have requested a photo in natural light before buying, based on the blue label."

A fourth person added: "I was going to say the same thing - the white balance is completely off, you can see the paper label looks blue. The seller should have noticed that and taken another photo."

"I encounter this issue when taking pictures of certain items, and it drives me crazy," another commented. "In my case, it's the iPhone making automatic colour adjustments, and there's nothing I can do.

"This sometimes results in things appearing as entirely different colours!"