There isn't a specific name for these kinds of pictures, although a well-put together outfit is often called an "ensemble".
Tapestries .
They're called icons.
either they are called gortenborg's or they are called danmuffins
Motivational posters
Lady Gaga wears those outfits because she said she wants to be unique and stand out. Make people remember for what she did. :)
Demotivational pictures ( a play on motivational posters).
rebuses
ASCII art
Those people are called paparazzi.
A cork board
Because she tries to catch attention and it goes with her videos.
They are called "Demotivationals" or "Demotivational Posters", the opposite of Motivationals or Motivational Posters.