Gerald is careful. Piggie is not.
Piggie cannot help smiling. Gerald can.
Gerald worries so that Piggie does not have to.
Gerald and Piggie are best friends.
In There Is a Bird On My Head , Gerald discovers that there is something worse than a bird on your head-two birds on your head Can Piggie help her best friend?

Gerald is careful. Piggie is not.
Piggie cannot help smiling. Gerald can.
Gerald worries so that Piggie does not have to.

Gerald and Piggie are best friends.

In I Am Invited to a Party Piggie is invited to her first party. She doesn't know what to wear, though, so she asks her best friend Elephant for help. Elephant's advice is odd to say the least, so Piggie will try on all sorts of zany outfits before finally arriving at the party for a hilarious surprise.

Gerald is careful. Piggie is not.
Piggie cannot help smiling. Gerald can.
Gerald worries so that Piggie does not have to.
Gerald and Piggie are best friends.
In Listen to My Trumpet Piggie can't wait to play her new instrument for Gerald But is she ready to listen to his reaction?