Tearaway is a fantastic amazing title you PlayStation Vita owners should already have in your collection. And I will take any excuse to sing the praises of this game, even when there's some silly downloadable content released for it.
In this case, you can get some LittleBigPlanet themed gear now. It's 14 pieces of content for $2.99, which is a silly thing considering you can just create whatever design you want within the game. I mean people were designing characters based on Sonic, Link, Pikachu and more.
You don't need to buy the DLC. You DO need to buy Tearaway though.