The 17-year-old musician and Alli, 16, will join Justice Crew at the two-city event happening in Sydney and Melbourne over the weekend.
Slimefest is just what is says — an actual slime fest. Additionally, there will also be games, rides, food, drinks and merchandise available to purchase and participate in, along with some great interactive activities to see and do.
ARE YOU GOING TO SLIMEFEST?
20+ pics inside of Cody and Alli Simpson…