She may not always get it exactly right (okay, she never gets it right), but Betty Suarez of Ugly Betty is on to something terribly chic with her multi-patterned outfits. This Homecoming, try a dress that artfully blends two completely different, but totally complementary patterns, or add a cardigan or scarf in a contrasting print to create a custom look that's all your own! --Angel
The key to mixing prints is to have at least one common color in both patterns. Also, large prints look great with small prints.
Here are some ideas to inspire you: