nIts fun to be a Baby-sitters Little Sister nn nKaren will try anything n nn nKaren has new roller skates. She is a very good skater. She can ever do tricks.n nn nBut oh, no Karen falls down and breaks her wrist She has to go to the hospital and get a cast.n nn nKaren wants somebody famous to sign her cast. It isnt going to be easy-but Karen wont give up till she gets the job done n