When Brown Bear's parents tell him that he is too small to attend the party they are giving, he dresses up in their clothes and arrives as a mysterious guest whom no one knows.
- ISBN10 068950523X
- ISBN13 9780689505232
- Publish Date 1 September 1991
- Publish Status Active
- Publish Country US
- Publisher Simon & Schuster
- Imprint Atheneum Books for Young Readers
- Language English