If you need a report on an official character, "Little Miss Toots" does not exist in mainstream media. The closest official characters are Little Toot (tugboat) or Miss Toot (Bob the Builder). If you saw this exact spelling, treat it as a unique creation or nickname —which means you are likely the best expert on it. For further help, please provide the context (book, show, game, or person).
It sounds like you're looking for a useful, informative report on However, the name isn't widely known as a single, famous character or product. To give you a truly useful report, I've broken down the most likely possibilities based on how that name is used in the real world. little miss toots