By Charise Mericle Harper, Author. In the sixth installment of the acclaimed Just Grace series, best friends Grace and Mimi take on a new adventure as mother's helpers when they learn Mimi's going to be a big sister! Playful and easy to relate to, Just Grace and the Terrible Tutu is perfect for emerging chapter book readers. Grace is back to her zany antics again! Grace and Mimi have a secret: Mimi is going to be a big sister. To get ready, the girls try being "mother's helpers" to a family down the street, and Mimi begins to doubt her big sister abilities when 4-year-old Lily seems to like Grace best. But when Lily turns into a Terrible Tutu, Grace can't escape her! Can Grace use her empathy powers to shows Lily and Mimi the creative path towards a new friendship? For ages 6 and up.