Who is your favorite artist?

I have gotten in a rut with my blog so I thought I would kick start it with something new.  I have many artists that I love. The one I am going to talk about today is Georgia O'Keefe.  I saw a painting of hers while at the Art Institute of Chicago recently.  I understand Georgia studied art at the Art Institute of Chicago in the early 1900s.  The painting was an abstraction of flowers.  She could take an ordinary flower and make it looks sensual.  Each petal was interesting.   She could bring the viewer right into the picture.  Enlarging the tiniest petal to fill an entire canvas emphasized their shapes and line and made them appear abstract. 

Who is your favorite artist and why?  Lets talk about it.