Karen's worst day /
Ann M. Martin ; illustrations by Susan Tang.
- New York : Scholastic, c1989.
- 100 p. : ill. ; 20 cm.
- Baby-sitters little sister .
- Martin, Ann M., 1955- Baby-sitters little sister. .
Karen's having a bad-luck day and she tries to make it better, but then her cat runs away. Will this be her worst day ever?