Looks like she had her $15,000.00 make up job by Oprah’s make up man.
Makeup artist Derrick Rutledge makes over Michelle Obama, Oprah - and himself
http://www.washingtonpost.com/lifestyle/style/makeup-artist-derrick-rutledge-makes-over-michelle-obama-oprah—and-himself/2011/09/11/gIQA8G9E9M_story.html