I originally had this image labeled as Alberta Brianti, but that ain't Alberta Brianti. It's Sesil Karatantcheva, and thanks to the eagle-eyed reader who set me right.
Bulgarian tennis player Sesil Karatantcheva turned pro at age 14 in 2003. She has been ranked as high as No. 35 in the world in singles, and has six ITF circuit singles titles.