Learn more about your favorite celebrity's superstitions! Heidi Klum <br />always keeps her baby teeth close by. Taylor Swift <br />used to write '13' on her hand before every performance. Ariana Grande <br />used to munch on donuts before big auditions. Megan Fox <br />always listens to Britney Spears music on plane rides. Michael Jordan <br />wore his college shorts under his NBA uniform for most of his career. Matt Lauer <br />arrives in his dressing room at the same time to the minute, every day. Christian Bale <br />deliberately walks under ladders.
