Sing it out / Wooster, Devin Ann

With Princess Courtney at Camp Pop and the famous rock star, Erika, at Camp Royalty due to a mix-up, the two girls must come together for an epic sing-off when they learn that both camps are in danger of shutting down.

"When a princess and a pop star accidentally attend the wrong summer camps, they must work together to show each camp the other's value"--OCLC.