Maybe we should blame the Girl with the Dragon Tattoo, or we could point the finger at Anne Hathaway in Batman.
Whoever's to blame, we're not complaining: leather trousers are officially So Hot Right Now, as proven by the expertly honed pins of some of our favourite celebrities.
We've flagged the trend up in this month's issue of ELLE. The lessons to learn?
1. Don't just stick to black - as Allison Mosshart shows, a shade such as bottle green can be just as rock n' roll.
2. Balance out the silhouette with a looser cut on top.
3. A tailored blazer is the perfect topper.
4. If you really want to be ahead in the style stakes, choose a looser cut like Rita Ora. The turned up hems are the perfect finishing touch.