Well, it’s still better than the last two movie attempts

The best guess we could all make is that the baker/decorator designed this from memory since what it’s trying to resemble has been the most common cover for Fitzgerald’s novel (see below). Instead the cake resembles a relative of the last person born on Earth from the Doctor Who episode “The End of the World,” or maybe Jambi from Pee Wee’s Playhouse was crushed into a rectangle.

The cover since first edition by Francis Cugat