Books in the Busy Betty series

"Busy Betty has always been busy. Every day she wakes up with a million questions and a billion ideas! And today she has an amazing idea: she's throwing her mom a birthday party. Shhh... It's a surprise! Then Betty and her best friend, Mae, have the best idea of all: What if they threw Mom a circus surprise party?! It will be the greatest day in the history of the universe! Everything is perfect until Betty realizes oh, no! Mom's birthday isn't today...it's next month. Whatever will they do with their circus surprise now?"--