First her breasts and now her face? Since breaking up with baseball star Alex Rodriguez last year, Cameron Diaz seems to have gone out of her way to prove she is young, carefree and single!

Cameron will be turning 40 in August, and RadarOnline.com has new photos that suggest she has gone to extremes to turn back the clock before her landmark birthday.

"There's something about Cameron Diaz's face that is very unusual," celebrity plastic surgeon Dr. Anthony Youn, who has not worked with the star, told RadarOnline.com in an exclusive interview.