Mumbai: Oh la la girl Vidya Balan and Siddharth Roy Kapur will tie the knot in Subramania Samaj temple on December 14th, 2012.Ceremony is going to take place in both Punjabi and South Indian styles. The couple organized a mehndi ceremony on Wednesday at Vidya's home attended by Bollywood star Rekha and close family relatives and friends. Vidya was looking gorgeous in Kanjeevaram sari. She came outside the house and showed her mehndi to fans and said ‘'Mehandi rachne dijiye phir dekhiye'' Vidya started dating Siddharth in 2010 during the shooting of his UTV studio's film, No One Killed Jessica. It was rumoured Siddharth Roy Kapur had also bought a sea-facing apartment in Juhu, Mumbai for his ladylove Vidya which reportedly cost him approx. Rs. 14 crore. Siddharth Roy Kapur, head honcho of UTV Motion Pictures, is a two-time divorcee. We hope he's third time lucky!