Versatile actress Vidya Balan, who turned 39 on January 1, celebrated her birthday on 31st of December with her family and close friends at her residence. The actress threw a theme party at her residence. Her husband Siddharth Roy Kapur, her parents and her brother-in-laws Kunal Roy Kapur and Aditya Roy Kapur were seen dressed in a quirky way for Vidya's birthday eve. Vidya posed with her hubby Siddharth wearing a black long gown, a golden hat and dark-kohled eyes. Whereas, her SRK wore a black shirt and blue jeans. Aditya was seen in a white T-Shirt, blue faded denim jacket and grey jeans. He teamed it up with a straw hat and black sneakers.