STUTTGART, GERMANY - APRIL 22: Tennis player Maria Sharapova poses for the media as she is unveiled as car manufacturer Porsche's new brand ambassador at the Porsche Museum on April 22, 2013 in Stuttgart, Germany. (Photo by Thomas Niedermueller/Getty Images)
STUTTGART, GERMANY - APRIL 22: Tennis player Maria Sharapova poses for the media as she is unveiled as car manufacturer Porsche's new brand ambassador at the Porsche Museum on April 22, 2013 in Stuttgart, Germany. (Photo by Thomas Niedermueller/Getty Images)
STUTTGART, GERMANY - APRIL 22: Tennis player Maria Sharapova poses next to a Porsche 956 C race car after at the Porsche Museum on April 22, 2013 in Stuttgart, Germany. (Photo by Alexander Hassenstein/Bongarts/Getty Images)
STUTTGART, GERMANY - APRIL 22: Tennis player Maria Sharapova poses in a Porsche 911 Carrera 4 Cabriolet as she is unveiled as car manufacturer Porsche's new brand ambassador at the Porsche Museum on April 22, 2013 in Stuttgart, Germany. (Photo by Alexander Hassenstein/Bongarts/Getty Images)
STUTTGART, GERMANY - APRIL 22: Tennis player Maria Sharapova poses for the media next to a Porsche 911 Carrera 4 Cabriolet as she is unveiled as car manufacturer Porsche's new brand ambassador at the Porsche Museum on April 22, 2013 in Stuttgart, Germany. (Photo by Alexander Hassenstein/Bongarts/Getty Images)
STUTTGART, GERMANY - APRIL 22: Tennis player Maria Sharapova poses for the media next to a Porsche 911 Carrera 4 Cabriolet as she is unveiled as car manufacturer Porsche's new brand ambassador at the Porsche Museum on April 22, 2013 in Stuttgart, Germany. (Photo by Alexander Hassenstein/Bongarts/Getty Images)
Russian tennis player Maria Sharapova and CEO of German car manufacturer Porsche Matthias Mueller pose for photographers inside a Porsche 911 in Stuttgart,southern Germany, on April 22, 2013. Sharapova will be the first global ambassador for German car manufacturer Porsche. AFP PHOTO / FRANZISKA KRAUFMANN GERMANY OUTFRANZISKA KRAUFMANN/AFP/Getty Images
STUTTGART, GERMANY - APRIL 22: Tennis player Maria Sharapova poses in a Porsche 718 RS 60 Spyder at the Porsche Museum on April 22, 2013 in Stuttgart, Germany. (Photo by Alexander Hassenstein/Bongarts/Getty Images)
STUTTGART, GERMANY - APRIL 22: Tennis player Maria Sharapova poses for the media as she is unveiled as car manufacturer Porsche's new brand ambassador at the Porsche Museum on April 22, 2013 in Stuttgart, Germany. (Photo by Thomas Niedermueller/Getty Images)
STUTTGART, GERMANY - APRIL 22: Tennis player Maria Sharapova with Matthias Mueller (R), CEO of Porsche AG, as she is unveiled as car manufacturer Porsche's new brand ambassador at the Porsche Museum on April 22, 2013 in Stuttgart, Germany. (Photo by Thomas Niedermueller/Getty Images)
