Grade 5-9–In volume five in the series, Princess Mia has a new problem to overcome–how to get to the senior prom when boyfriend Michael thinks it's the height of lame. More drama erupts when Grandmère brings her poodle to Mia's 15th birthday party at a fancy restaurant. He gets loose, a busboy from Nepal gets fired, Mia's best friend starts a protest on his behalf, and the subsequent restaurant workers' strike shuts down the entire food and hotel industry, including the prom venue. Grandmère refuses to take responsibility, but finds an alternate prom site, and Mia manages to get the gig for Michael's new band. Thus, she gets to go to the prom. Fans will eat up this newest installment in the life of a teenage royal, and they won't mind Mia's whining and often shallow insistence on the importance of the dance over a fight that might end her long-standing friendship with her best friend, and Grandmère's immature behavior. Mia is an engaging if sometimes not very memorable heroine, and the conversational tone of the diary entries makes this a fun, lighthearted read.