Mona Lisa. She's Air Today...

Maybe she'll be gone tomorrow.
The humorous and talented artist Larry Moss uses 'airigami' translated literally, meaning 'folding air' to create wonderfull works of art. You can see more on amusingplanet.com
Starting out as a street performer twenty five years ago, he's displayed his 'balloon art' in many countries around the world.
I guess he sells them at highly inflated prices...