Christine LaGarde has been the Managing Director of the IMF since July 5, 2011.
If you want to contact Christine LaGarde, here are the best ways:
https://www.facebook.com/christinelagarde Her Facebook page.
https://twitter.com/lagarde Her personal Twitter @lagarde
https://www.imf.org/external/np/omd/bios/cl.htm Here recent articles are posted here
International Monetary Fund – World Economy – July 2011 – Seen on Bloomberg