Cheats42.net

At the Press Start screen enter the following:
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Tips and Tricks Shirt for Ishani
R3, Square, Square, Down, Circle, L3, Square, Square, Up, Left.
PSM Shirt for DeVron
Left, Right, Left, L3, R3, Down, Up, Up, Circle, Square.
Play Magazine Shirt for Naoko
Up, R3, Up, Down, Right, Right, Left, L3, Circle, Square.
Official U.S. PlayStation Magazine Shirt for Gibson
Down, L3, Up, Up, Left, Right, Down, R3, Circle, Square.
IGN Shirt Raphael
Up, R3, Right, L3, L3, Up, Left, Up, Square, Circle.
GameSpy Shirt for Dwayne
Down, R3, Circle, L3, R3, Down, L3, Square, Circle, Square.
G4 Shirt for Kazz
Up, Up, L3, Down, Left, Right, R3, Right, Circle, Square.
Electronic Gaming Monthly Shirt for Dwayne
Down, R3, Right, L3, R3, Down, L3, Left, Circle, Up.
1UP Shirt for Dwayne
R3, Circle, Square, R3, Down, Right, Left, Up, Square, Circle.
Unlocks new GMR outfit for Aneeka
Right, Left, R3, Left, Up, Up, L3, Down, Circle, Square
Unlock GameStar t-shirt
Up, R3, Right, R3, R3, Left, R3, Down, circle, circle
Unlock GamePro t-shirt
Down, R3, Up, R3, L3, Down, L3, Up, Down, Square
Unlocks Harmonix Outfit for Ishani
L3, Circle, Up, Circle, Square, L3, Down, Down, R3
Unlocks Game Informer Outfit for Angela
Down, L3, L3, R3, R3, Circle, Right, Square, L3, R3
Unlocks Konami Outfit for Dwyane
Right, R3, Right, R3, Square, Right, Circle, Square, Down, Left
Big Head Character
Down, Down, Down, Up, R1, L2, L1, R2, Circle, Circle
Glass Character
Square, Square, Circle, R2, R2, L2, Down, Left, Left, Up
Oil Slick Character
L2, R2, L2, R2, Square, Down, Circle, Up, Left, Right
T2 Character
Circle, L1, R2, Up, Up, Left, Left, Square, Square, R1
Wraith Character
R2, Left, R1, Right, Up, Up, Square, Circle, Down, L2
Tough Crowd Audio Cheat
Right, Up, Circle, Circle, Circle, R2, R1, R1, L2, Down
Pirate Crowd
Square, Square, Left, Left, R2, L1, R2, R1, Circle, L2
Robot Crowd
Circle, Circle, Left, Left, R2, R1, R1, R2, Circle, R2
Zombie Crowd
Left, L1, L2, Square, Square, L2, L2, L1, Left, Left
Animation Gender Swap
Up, Down, Left, Right, L1, R1, Square, Circle, R2, R2
Unlock All Songs
Square, Triangle, Down, Left, Up, Right, L2, R2, Start
Unlock All Venues
Square, Triangle, Right, Up, Left, Down, R2, L2, Start
Unlock All Outfits
Up, Circle, Left, Square, Square, Down, Circle, Right, R3, L3
Unlock All Characters
Up, Square, Right, Circle, Square, Left, Circle, Up, L3, R3
Unlock DeVrons PSM Outfir
Left, Right, Left, L3, R3, Down, Up, Up, Circle, Square
Toothbrush Microphone
R1, L1, R2, L2, Right, Left, Down, Up, Circle, Square
Banana Microphone
L1, L1, R2, R2, Right, Down, Circle, Left, Up, Square
Big Eye Character
Square, Square, Square, Square, Circle, Down, Down, R2, L2, R1
Small Head Character
Right, Right, Up, Up, L2, L2, R2, R1, L1
Dwayne Doll Microphone
Circle, R2, Square, L1, R1, L2, Square, Up, Circle, Square