Finding the right size at the buffet of brands that comprise the great British high street is no small feat.

In one shop, you may be a certain size and in another, you may be considered to be a size smaller or larger, and all that results in is a sizing battlefield that makes finding the perfect fit nothing short of a total disaster.

Thanks to a helpful TikTok hack (what did we do before TikTok?), the sizing complications you may have encountered at juggernaut Zara are to become a thing of the past. In a clip uploaded to the app by user @wearherstyle, Spanish label Zara’s secret sizing system is revealed.

This viral TikTok explains Zara’s secret sizing system, and it’s going to change the way you shop