I've been doing a lot of mixing prints lately--mostly out of necessity, since I seem physically incapable of buying solid separates...or singles for that matter. I don't own one dress without a print. Why is it so much easier to buy five perfect floral skirts than it is one nice black one? I ask you.
This wouldn't be such an issue if I didn't love patterned accessories so much as well! So in the end I say screw it. As long as the colors work, the prints will follow...and nobody will know that you didn't have a choice in the matter!
