After a painstaking search of the web I managed to find all the costumes. Do you have any idea of how many sites pop up when you google children's dance costumes?Holy Cow! So without further ado here they are! Squee!
Clockwise from top right
Madeline (tap) What Time Is It?
Madeline (jazz) Best of Both Worlds.
Madeline (ballet) Waltz of the Flowers
Lillian (tap) Fly To Your Heart