Karen's Half Birthday is the 78th book in the Baby-Sitters Little Sister series.
Back Cover SummaryEdit
Karen is the youngest in her class. Everyone teases her and calls her a baby. But soon Karen is going to turn seven and a half. She decides to throw herself a half birthday party.
Karen's friends think the party is a big pain. They do not like getting half-filled goody bags or playing games halfway. They think Karen is bossy. Now what is Karen going to do?