Here's a favorite slinky knit dress in black with tiny pink dots all over. I like to wear it with a white top and my pink crocs. I got the dress and top at thrift stores, and paid a good price for the crocs on ebay. Click on the pictures for more details:
Here's another inexpensive outfit. The slinky tank top and the rayon print blouse are from thrift stores, while the skirt is from WalMart: