- Qatar Museums Sheikha Al Mayassa is one of the most influential women in art
- She's rumored to have a purchasing budget of $1 billion a year
- She considers the exhibitions she commissions an 'informal way of education' for locals and tourists
CNN Style launches on Saturday April 9 at 0830 EDT on CNN International.
(CNN)With a rumored annual purchasing budget of $1 billion, Sheikha Al Mayassa bint Hamad bin Khalifa Al Thani is one of the most powerful women in the art world -- and one of the most secretive.