The milk suit appears in "The Duke." It is a suit Princess Bubblegum uses to help with her green and bald problem that was caused by the potion in the Boomerang bottle. As stated by Dr. Ice Cream, it would take five days in the suit to be back to normal. It is easily ruptured since a simple movement by Princess Bubblegum caused it to leak milk in small holes. Lemongrab wears a suit similar to the milk suit.