The above images recently surfaced on Spanish PlayStation fansite PSN!, but were quickly removed at the request of Sony Computer Entertainment Europe. Fortunately, Ripten and 1UP were able to archive the pictures before their removal.
If legitimate, and it certainly appears so given the SCEE-mandated removal, Street Fighter's LittleBigPlanet appearance mark the latest set of game-referencing outfits. Other promised costumes include Final Fantasy 7's Sephiroth and Metal Gear Solid 4's Old Snake, with a Resistance 2 Chimera costume recently added.
"Premium" LittleBigPlanet costumes such as the Chimera typically sell for $1.99 a piece, while regular downloadable costume add-ons are either free or priced at $0.99.
In related news, the Xbox 360 has recently seen a rash of Street Fighter II-related DLC for otherwise unrelated games, with Pinball FX receiving a dedicated Street Fighter II table and UNO netting a specialized Street Fighter II deck with custom rules and cards.