Happy fall, y’all! As temperatures start to drop (or have already for you cooler-weather gals), it’s a great time to take a long, hard look at your wardrobe. I don’t know about you, but I used to constantly find myself gazing wistfully at my closet, wishing I had that one perfect whatever that would just pull everything together. Truthfully, sometimes I still do. But everything changed once I started working for Madewell a few years back. Right off the bat, associates are encouraged to dress by the “Third-Piece Rule,” a simple equation for styling outfits that are just a bit more elevated. Basically, your top and bottoms are pieces one…