Karen's Big Sister is the 69th book in the Baby-Sitters Little Sister series.
Back Cover SummaryEdit
Karen loves her stepsister Kristy. Then Daddy gives Kristy a special pin. Karen is jealous. She wants the pin. But Kristy will not let Karen even borrow it.
Karen borrows the pin anyway. Then she loses it in the snow. Uh-oh. Now what is Karen going to do?