There is no single Gen Z wardrobe. That is the first useful correction to most discussions of the subject. Younger shoppers may mix secondhand pieces with sportswear, formal tailoring with trainers, or deliberately awkward proportions with very conventional basics. What connects these looks is often flexibility rather than one dominant aesthetic.
Social media accelerates the circulation of references, but it also makes style more fragmented. A trend can travel quickly without becoming universal, and the language of micro-aesthetics can make ordinary experimentation look more coherent than it really is.
Secondhand without the mythology
Vintage and resale are visible parts of younger fashion culture, but secondhand shopping is not automatically sustainable, affordable or anti-consumerist. It can be about budget, rarity, nostalgia, collecting or simply finding clothes that high-street shops do not currently offer.
Comfort and looser dress codes also matter. The boundary between clothes for study, work, travel and leisure is less rigid in many settings than it once was. That does not mean office dressing or formalwear has disappeared; it means people have more room to combine categories that were previously kept apart.
The most interesting change is therefore not that Gen Z has abolished fashion rules. It is that fewer rules can be assumed to apply to everyone at once. Style is increasingly assembled from overlapping references rather than received as one seasonal instruction.
That makes British street style harder to summarise, but also more interesting to watch. The point is not that one generation has solved fashion. It is that it has become especially comfortable with contradiction.