Matching underwear is a many-wondrous thing. It is the secret to a good mood, pop on a set, no matter how plain and it'll be your little secret for the rest of the day. Seriously, I can find myself smiling to myself whenever I get reminded of its presence. Because I don't know about you, but I am always in the best of moods when I feel undeniably sexy. How about you? What's your personal mojo booster?