Iron ManMeet Iron Man's latest nemesis: Eyjafjallajökull!

According to the Hollywood Reporter, the ash emanating from the volcano in Iceland has canceled London's upcoming world premiere of 'Iron Man 2,' which was to be held on Apr. 26.

But what's London's loss will soon be Los Angeles' gain, as the film's stars including Robert Downey Jr., Gwyneth Paltrow, Don Cheadle, Scarlett Johansson, Mickey Rourke, Samuel L. Jackson and director Jon Favreau, will assemble there for a relocated world premiere on the same date.