There are many Munchkin shirts - each with a different special power.
Official Tournament Rules
If you are wearing an official Munchkin shirt (on your torso, right side out), you may draw one extra card from either deck when you start play or when you come back from the dead.
If you are wearing an official Munchkin shirt it may give you special powers besides the ones listed here - see the official site for specifics.
Shirts autographed by Steve Jackson, John Kovalic, Greg Hyland, Andrew Hackard, or Wil Wheaton have additional powers - see the official site for specifics. (Note that signatures may only be valid for certain shirts.)
Wearing two or more Munchkin shirts at the same time does NOT give the bonuses from both shirts. The one on the outside rules.
Use of the Cheat card overrides Rule 4 and lets you benefit from two shirts. (It doesn't matter which one is outside).
But under no circumstance is there any bonus for MORE than two shirts.
It is NOT an official tournament rule, but if you wish to make a house rule that a "Lose Your Armor" card requires you to remove your shirt(s), we cannot stop you.
List of Shirts
Munchkin: Waiting For Santa
Cultic Combativeness T-Shirt
Dungeon Dementia T-Shirt
Fairy Dust T-Shirt
Munchkin Fairy Dust
Four Horsies of the Apocalypse T-Shirt
Heart of the Anomaly T-Shirt
Lovely Loot T-Shirt
Munchkin and Munchkin 2
Momentous Unmasking T-Shirt
Munchkin Apocalypse T-Shirt
Munchkin Fu T-Shirt
Munchkin Zombies T-Shirt
Munchkin 10th Anniversary T-Shirt
Star Munchkin T-Shirt
Unnatural Axe T-Shirt
Utterly Unsinkable T-Shirt
Zombie Santa T-Shirt
Part of the Munchkin series
- Four Horsies of the Apocalypse T-Shirt
- Keep Calm And Kill Monsters T-Shirt
- Munchkin 10th Anniversary T-Shirt
- Munchkin Apocalypse T-Shirt
- Munchkin Booty Utterly Unsinkable T-Shirt
- Munchkin Christmas T-Shirt
- Munchkin Cthulhu Shirt of Cultic Combativeness
- Munchkin Dungeon Dementia T-Shirt
- Munchkin Fairy Dust T-Shirt
- Munchkin Fu T-Shirt
- Munchkin Heart of the Anomaly T-Shirt
- Munchkin Lovely Loot T-Shirt
- Munchkin Official Shirts
- Munchkin Polo Shirt
- Munchkin Sweatshirt
- Munchkin T-Shirt
- Munchkin Tavern T-Shirt
- Munchkin Unnatural Axe T-Shirt
- Munchkin Zombies T-Shirt
- Star Munchkin T-Shirt
- Super Munchkin Momentous Unmasking T-Shirt
- Zombie Santa T-Shirt