Thousands of people will be famous for an hour as they become living works of art over the next few weeks in London.
Maddy's been to Trafalgar Square in London where people have been chosen to stand on top of one of the four plinths there for an hour each.
While she was there she had a chat to student Suren Seneviratne, who's dressing up as a panda for his time on the plinth.
He told her what he'll be doing up there and why he's decided to dress up as a panda for the occasion.