Here is a cool T-shirt with a LED panel that lets you display text, animation, and other graphics on your chest. It has a 8×15 LED panel made of WS2812B LEDs. You can interact with the shirt over WiFi with your Android phone. The panel is IP-65 waterproof.
The Android app lets you display scrolling text, games, animations, and effects on your shirt. More information is available on Kickstarter.