The Chicken Suit is a beta suit that was going to appear in New Super Mario Bros. Wii, but it got removed. It later reappeared in New Super Mario Bros. VR as one of the new power-ups. The Chicken Suit turns Mario into Chicken Mario, where he can shoot fireball-like chicken eggs and float down after jumping, like Mini Mario. It was meant to be an advanced version of the Fire Flower.
The Chicken Suit's true debut is in New Super Mario Bros. VR. It first appears in World 2-1, Water Land. After that, it is a common item in the game.
The Chicken Suit is one of the Power-ups in Super Mario Bros. and the 5 Magic Stars. It first appears in World 1, Level 2. It is a common Item in World 1, 4 and 12