![Black Leather Knee High Boots with Black Leather Skinny Pants Smart Casual Fall Outfits In Their 20s: A grey crew-neck sweater and black leather skinny pants are absolute must-haves that will integrate wonderfully within your day-to-day styling arsenal. For maximum fashion points, add a pair of black leather knee high boots to the equation. As the weather starts to cool down, you'll see that an outfit like this is ideal for autumn.](https://cdn.lookastic.com/looks/crew-neck-sweater-skinny-pants-knee-high-boots-large-35916.jpg)
![Grey Crew-neck Sweater](https://cdn.lookastic.com/grey-crew-neck-sweater-original-1330827.jpg)
![Black Leather Skinny Pants](https://cdn.lookastic.com/black-leather-skinny-pants-original-4261081.jpg)
![Black Leather Knee High Boots](https://cdn.lookastic.com/black-leather-knee-high-boots-original-1548465.jpg)
![Red Plaid Scarf](https://cdn.lookastic.com/red-plaid-scarf-original-1675983.jpg)
![Black Sunglasses](https://cdn.lookastic.com/black-sunglasses-original-9539401.jpg)
![Gold Watch](https://cdn.lookastic.com/gold-watch-original-9014385.jpg)
A grey crew-neck sweater and black leather skinny pants are absolute must-haves that will integrate wonderfully within your day-to-day styling arsenal. For maximum fashion points, add a pair of black leather knee high boots to the equation. As the weather starts to cool down, you'll see that an outfit like this is ideal for autumn.