Mo's Mustache by Ben Clanton is a super fun book. All of the monsters want the new fashion statement Mo has. First he wears a mustache, then a scarf and then... he loses his temper because all his friends were copying him. Then they tell him it's because he's so awesome and they love him. This is a superb friendship story, being an individual, or standing out from the crowd story.
The fun monsters have such personality and are delightfully boisterous. I'll share this title in Storytime with three year-olds and older children. Reading this book makes me want to do a whole Storytime or Family Fun Night all about mustaches!