LONDON, ENGLAND - MARCH 03: Curator Shannon Pratt, 37 polishes a case containing a signed 'Float like a butterfly sting like a bee' robe worn by cornerman Bundini Brown at the 'Rumble in the Jungle' fight - at the preview of the 'I Am The Greatest' Muhammad Ali exhibition on March 3, 2016 in London, England. The exhibition showcases the life and career of heavyweight boxer Muhammad Ali and features over more than 100 artefacts including personal memorabilia, unseen footage and photographs. It is open to the public from Friday March 4, 2016 at the O2 in London. (Photo by Chris Ratcliffe/Getty Images)
