Here is a T-Shirt with a LED panel that can be controlled by an Android app over WiFi. You will be able to display text and animations on it. The LED shirt has a 8×15 panel constructed of WS2812B LEDs. It is IP-65 waterproof. The WiFi controller software is written in the “C” language.
The app lets you choose scrolling text, games, and other animations to choose for your shirt. You also get strobe, pulse, and other effects. You can find out more about this project here.