Sacktue of Liberty
Since 2008, MediaMolecule has been running promotions for free LittleBigPlanet costumes -- usually on holidays -- which is pretty impressive. On July 3rd of this year, anyone who owns the original two games or LittleBigPlanet Vita will be able to partake in purchasing the re-released "Sacktue of Liberty."
In fact, anyone can pick it up even if you don't own the game -- just load up the PSN, search for newest add-ons (or LBP add-ons) and grab the license.
LittleBigPlanet Update: Team Picks, Free DLC and an LBP Story [PlayStation Blog]