Mahalia Harris wants. She wants a big Sweet Sixteen like her best friend, Naomi. She wants the super-cute new girl Siobhan to like her back. She wants a break from worrying—about money, snide remarks from white classmates, pitying looks from church ladies . . . all of it. Then inspiration strikes: It’s too late for a Sweet Sixteen, but what if she had a coming-out party? A singing, dancing, rainbow-cake-eating celebration of queerness on her own...