Note: The following code requires two players and controllers. At the main menu, simultaneously hold L1 + L2 + Up + Select + L3 on controller one and R1 + R2 + Triangle + Start + R3 on controller two. If you entered the code correctly, you will hear a short sequence of music. Press R3 on controller one to change the value of the numbers that appear on screen, then start a new game or resume a saved game to view the corresponding costume.
 
Result Code
Original outfit and hair color 0000:0000
Blackbeard in purple 0000:0001
Red hair with red and orange bikini 0000:0010
Blue hair with orange and red bikini 0000:0011
Tan, brown hair, orange and yellow bikini 0000:0100
Blonde hair, orange and yellow bikini 0000:0101
Blonde hair, pink bikini 0000:0110
Blue hair, shiny silver bikini 0000:0111
Red hair, black bikini, black stockings 0000:1000
Pink hair, shiny black body suit 0000:1001
Blue hair, shiny copper body suit 0000:1010
Purple hair, shiny silver body suit 0000:1011
Game Shark Codes
Master Code (Must Be On) 0E3C7DF2 1853E59EEE8EE382 BCD52FD2
Infinite Health Kat CEBDDADA BCA99B64CEBDDAE6 BCA99B64
Infinite Scarecrows CEBDD91A BCA99E6A
Infinite Magic Harps CEBDD926 BCA99E6A
Max Hearts Kat CEBDDADE BCA99B8A
Max Money DEBDD966 C19E7B82
Max Cannons CEBDD9FA BCA99B88
Max Cannons Aboard CEBDD96E BCA99B8C
Harmless Enemies (On Foot) DE994BF6 BF899B8BDE994BF2 BCA99B83
Special Attack Full Kat CEBDDAC0 BCA9DA03CEBDDAC2 BCA99B86
Scrapbook Complete CEA4BDEE BCA99B4B
Have Poseidon Figurehead CEBDD922 BCA99B84
Have Lion Figurehead CEBDD92E BCA99B84
Have Sea Serpent Figurehead CEBDD92A BCA99B84
Have Wolf Figurehead CEBDD936 BCA99B84
Have Ram Figurehead CEBDD932 BCA99B84
Have Dolphin Figurehead CEBDD93E BCA99B84