Ruby Marigold Booker is sweet, sassy, and every bit as tough as her three older brothers. Being the baby sister to the most popular boys on Chill Brook Avenue means she is always keeping an eye on their mischief when she isn't hanging out with her best friend. Now, Ruby is stepping into the spotlight to host a massive pink slumber party, and it is going to be spectacular. There is just one problem: the last time Ruby had her friends over for a sleepover, her big brother Roosevelt spent the entire night playing annoying tricks on them. This time, Ruby is not going to just sit back and let it happen. It is officially payback time. Armed with a little lipstick, a brilliant plan, and a lot of know-how, Ruby and her crew are ready to teach Ro a hilarious lesson he will never forget. Dive into this fun-filled chapter book and discover why you should never mess with the ultra-fabulous Ruby Booker!