I've also seen lots of the designers mixing textures. For example, picture #2 below, both fabrics are black, yet one material is jersey and the other is leather. By mixing the two fabrics together, you get a whole different look that can work for a any occasion.
Check out the goods below!
|1: Rachel Zoe, 2: Alexander Wang, 3: Diane von Furstenberg, 4: Charlotte Ronson, 5: Christian Siriano|
|6: DKNY, 7: Derek Lam, 8: Herve Leger, 9: Rebecca Minkoff, 10: Tracy Reese|
|11: Rachel Roy, 12: Marc Jacobs, 13: Preen, 14: Theyskens' Theory , 15: Carolina Herrera|