An alternate cover edition for this ISBN from 1993 can be found here

Pauline, Petrova and Posy are orphans determined to help out their family by attending the Children's Academy of Dancing and Stage Training. But when they vow to make a name for themselves, they have no idea it's going to be such hard work! They launch themselves into the world of show business, complete with working papers, the glare of the spotlight, and practice, practice, practice! Pauline is destined for the movies. Posy is a born dancer. But practical Petrova finds she'd rather pilot a plane than perform a pirouette. Each girl must find the courage to follow her dream.