'A Summertime Song' by Irene Haas

'A Summertime Song' by Irene Haas, 1997

One warm summer night, a frog jumped into Lucy's room with an invitation 
for her to a birthday party and a magic paper party hat. Lucy put it on, 
and out in the garden, when a moonbeam touched the hat, 
Lucy was as little as a leaf. So begins 
Lucy's wonderful adventure...