The One Direction cuties surprised fans by dressing up in the Wizarding World of Harry Potter park on Tuesday (November 18) at Universal in Orlando, Fla.
Louis shocked fans while working as an attendant on one of the rides, and even took a bunch of selfies with them!
Meanwhile, Niall apparently took a shift in the Harry Potter candy shop! Check out more photos below!
TELL JJJ: What would you do if you saw the 1D guys pop up at the theme park?