How do you steal cloths from people mainly raikov in Metal Gear Solid 3

Clothes aren't stolen from people in MGS3 they are found throughout the game. Although the Raikov thing is the exception. Use the scientist disguise to hide from the guards. Raikov is in the bathroom. Get him out of there and into the locker rooms upstairs. Once he's the Knock him out or kill him. Snake will hide his body in a nearby locker. When the cutscene is finished you will have the major's uniform