It's seems the leather jacket, specifically black, has now became the official choice when you want an otherwise wimpy song & appearance to seem a "little more badass" without being too menacing. We saw it coming with the preview clips already, and no less than 5 acts don this for the rehearsals this year, and if you count NF & promo videos there's actually even more.

And i included Iceland because it's leather or the like after all, even though none of them are technically wearing a jacket. Georgia & Belgium are clearly not leather though, but still similar in style. But who do you think wore it best?