Miss Polly Has a Dolly by Pamela Duncan Edwards, illustrated by Elicia Castaldi

From chapters.ca:
Children have been chanting "Miss Polly Had a Dolly" for centuries. But the original rhyme only had eight lines. Now for the first time, Pamela Duncan Edwards expands on the original to answer the question of what happens next (they all go out for ice cream when Dolly is feeling better). Newcomer Elicia Castaldi gives Miss Polly an amazing new look that perfectly matches the spunky rhythm of the text. Musical arrangement (for piano and guitar) with finger play instructions are included on the endpapers, so kids can sing along and act out the words.