Great Books for Elementary Readers

I am a librarian at an urban PreK-5 elementary school in Memphis. I'd love to get some ideas on hot books you think would be a great addition to my collection. I especially can use some help with titles that appeal to girls. Thanks for your input! 

                                                                      Melissa R. Reynolds, Librarian

                                                                      Keystone Elementary School

                                                                      Memphis, TN

                                                                      reynoldsmelissar@mcsk12.net