This volume includes: Oh, Baby! When Katie turns into her best friend Suzanne's baby sister, Heather, things are bad enough. But when Katie, as Heather, speaks to Suzanne, Suzanne things that her baby sister is a genius! How will Katie ever explain to Suzanne that it wasn't really Heather doing the talking, without spilling her big secret? Girls Don't Have Cooties Katie's best friend Jeremy and the other boys from Class 3A have decided that all girls have cooties. but when Katie finds herself in Jeremy's shoes--really--she tries to reunite the boys and the girls. Will Katie's plan work? Or will it just be one huge mess?