9. The Silk Trousers — There's something badass about fall's silk trousers, which is why we've added them to our list. You need these for a few reasons — not least of all because they're sexy, strong, and super stylish. 

Zara Printed Trousers, $79.90, available at Zara; Tibi Asher Skinny Pant, $288, available at Tibi.