Frank and Carl try to figure out why no one wants to buy their hats while other vendors are attracting many customers.

Ella is nervous about the first day of school in her new town, but wearing her grandmother's good luck hat makes her feel better--until the other students tease her and call her names.

Elmo and his Sesame Street friends all choose the right Easter hats to wear to the special Sesame Street Bunny Hop.

"You are cordially invited to the BIGGEST, BESTEST, HATTIEST party of all time!" Come join the fun-but only if you have a hat. AND you know the entry rules. Unfortunately, there seems to be a surprising number of those, as a young boy discovers. Will he-and the cool collection of animals he befriends along the way-ever get in? Gloriously illustrated, the art contains loads of details that serve as clues to the satisfying surprise ending. Kids will...