A highly illustrated middle-grade series that celebrates new friendships, first crushes, and getting out of your comfort zone—now in paperback   Ever since they can remember, fifth graders Kenzie (aka Kenzilla) and Shelly (aka Bomb Shell) have dreamed of becoming roller derby superstars. When Austin’s city league introduces a brand-new junior league, the dynamic duo celebrates! But they’ll need to try out as a five-person team. Kenzie and Shelly have just one week to convince