Prompt:

Create a digital illustration of three books arranged in a triangular formation. The central book should be titled "The Summer I Turned Pretty" by Jenny Han, with a light blue cover adorned with seashells and flowers. To the left, place a book titled "We'll Always Have Summer" with a purple cover featuring seashells and a starfish. To the right, include a book titled "It's Not Summer Without You" with a peach-colored cover decorated with seashells and a flower. Ensure the covers have a summery, beach-themed design, and include the author's name, Jenny Han, on each book. Add a subtle shadow to give the books a three-dimensional appearance.