She was apparently already worth about 700 million prior to her MDNA tour last year….taken from Huffington Post:

Her net worth jumped after her MDNA Tour brought in a whopping $305,158,363, making it the highest-grossing tour of 2012. That’s not counting the $75 million in merch sales, nor does it include the $10 million in TV and DVD rights that came with the 88-stop jaunt around the globe.

A small-but-committed group of writers, bloggers and videographers that (mostly) exist and function all over the D.C. Metro area.