Official Playstation Blog:
"Well, it's that time of year, and we wanted to celebrate a year of LittleBigPlanet. The next few weeks we'll have some bits and bobs for you to enjoy…starting with FREE DLC!
On the PlayStation Store:
In celebration of our birthday, we have two FREE costumes for our community. One new and one revisited – both available for a limited amount of time. How else would we celebrate the birthday of our launch, but with a slice of cake and a spacesuit? Be sure to drop by the PlayStation Store and download it this weekend."