starting from the top going down : first photo at top is britney spears from her "toxic" video. 2nd is Beyonce from the "run the world" video. 3rd we know. 4th is from Christina aguilera's "Your body".
the difference is xtina and brit brit , they had it done with a blue screen and weren't there for the actual explosion , didn't stand near the flame. Gaga made them set those explosions off less than 25 feet away.