Karen's Roller Skates (Baby-sitters Little Sister #2)

It's fun to be a Baby-sitters Little Sister!
Karen will try anything!Karen has new roller skates. She is a very good skater. She can ever do tricks.But oh, no! Karen falls down and breaks her wrist! She has to go to the hospital and get a cast.Karen wants somebody famous to sign her cast. It isn't going to be easy-but Karen won't give up till she gets the job done!