This is one of my favorite dresses I own. Velvet is obviously the best fabric out there so I love to wear as much of it as I can. The slit is a gift, it not only allows you to walk it, it allows you to show off your fabulous legs! The dress is no longer available at Urban Outfitters but here is a similar dress from Asos.
here is one similar. I love the tiny fall floral with the knit pattern of the sweater, it is a great way to mix patterns without even thinking about it.