Celebrities who celebrate birthdays in January

Slideshow posted in Photos | Wednesday, December 26, 2012

51 of 65: Mariska Hargitay turns 49 on January 23, 2013. The actress is best known for her role as a New York City sex crimes detective, Olivia Benson, on the NBC television drama 'Law and Order: SVU.'

(Pictured: Mariska Hargitay appears in a scene from a Jan. 30, 2013 episode of 'Law and Order: SVU.') (Michael Parmelee / NBC)