Navratilova dominated women’s tennis during her career, winning the women’s singles title at Wimbledon a record nine times. She is 55 today. (Nicholas Asfouri/Getty Image)
The man who gave us such touchstones of American cinema such as “Double Impact” and “Streetfighter” turns 51 today. (Dominique Chirriau/Getty Images)
The “Slumdog Millionaire” actress celebrates her 27th birthday today. (Joe Scarnici/Getty Images)
The teen heartthrob turns 24 today. (Tommaso Boddi/Getty Images)
Famous for turning a mistake into a career, Bristol Palin turns 21. (Laura Segall/Getty Image)
