Uniforms in Metal Gear Solid: Peace Walker

Sneaking Suit - Main Op: Combat helicopter: Mi-24A

Battle suit - Main Op: first Peace Walker battle

Battle suit w/ Helmet - Randomly received when fighting SS rank matches in Outer Ops

J. Fatigue - receive from the beginning of the game

Leaf - complete extra Op 14 with S rank

Tiger Stripe - Main Op: pursuing Amanda, in Bananal Fruta De Oro: sorting shed (it's in the office in the north end)

Choco-chip - complete extra Op 45 with S rank

AUSCAM - Main Op: Barricade Destruction

Square - extra Op 30

Splitter - extra Op 29. If it doesn't appear there, it's in extra Op 59, on top of a box.

Snake - extra Op 16 (the concrete area where the lumber is stacked)

Neo Moss - extra Op 62 (use your codec to communicate with the ghosts until they say "The End")

Bad Smell - clear extra Op 61 with S rank.

Tigrex - clear extra Op 123 with S rank.

Liolaeus (rathalos) - clear extra Op 121 with S rank.

Gear Rex - clear extra Op 125 with S rank.

Black, Khaki, navy blue, White, Red, Yellow, Pink, etc. - DLC (downloadable content)

Naked - get this from the beginning

Naked (Leaf) - Outer Op

Naked (Tiger Stripe) - Main Op: pursuing Amanda

Naked (chocolate) - Outer Op

Naked (AUSCAM) - extra Op 30

Naked (splitter) - extra Op 29 or Outer Op

Naked (snake) - Main Op: tropical cloud fog forest

Naked (same as above with black, khaki, navy blue, red, etc) - DLC (downloadable content)

Tuxedo - Clear chapter 4

Swimming trunks - extra Op 67 (on the bridge after you clear the mission with S rank)

Bikini - extra Op 68 (on the bridge after you clear the mission with S rank)

Miller - clear extra Op 68 with S rank.

Amanda - clear extra Op 67 with S rank.

T-shirt – extra Op 1, 2nd floor.

Other brands of T-shirt - insert the pass code in "extra" option in the main screen.