Avengers 2 Age of Ultron Black Widow Costume;

Government treatments have slowed black widow's aging, augmented her immune system, and enhanced her physical durability. Natasha Romanova, known by many aliases, is an expert spy, athlete, and assassin. Trained at a young age by the KGB's infamous red room academy, the black widow was formerly an enemy to the avengers. She later became their ally after breaking out of the U.S.S.R's grasp, and also serves as a top S.H.I.E.L.D. Agent