We know we tell you to "mix it up" quite often, but we also know we never entirely explain what exactly we mean by that oft-used phrase. So, we're taking this opportunity to lay it down. Mixing it up means taking two contrasting themes and wearing them together, thus highlighting the specialness of each. Let's face it: It's too predictable to wear a girly top with a girly skirt or a leather jacket with ripped jeans. Instead, learn how to clash your pieces with panache. Here's a primer featuring six different, genius (if we do say so ourselves) ways to mix it up.