The t-shirt as we know it was introduced to America back in WWI, inspired by the lightweight and comfortable undershirt of the European forces. By the 1920's, the t-shirt was standard military issue and the word was included in Webster's Dictionary.
Iron Man is a member of the superhero team, the Avengers. He was born as Tony Stark and entered MIT at the age of 15. He has a magnetic rechargable chestplate protecting his heart from a piece of schrapnel. His duty is to protect the world. Robert Downey Jr. portrays this Marvel Comic Hero in the live action film and he will reprise the role in the upcoming
Iron Man
sequel.