After watching the film 'Naanum Rowdy Thaan', not only did the Tamil audience fell in love with actress Nayanthara, even the director Vignesh Shivn was smitten by her.

The actress and director have been a couple for years and shared glimpses into their relationship through photos from vacations and celebrations.

This year, Vignesh Shivn turns 34 on his birthday Sept 18, and the couple had a blast celebrating with their friends. The pictures from the birthday party are all over Instagram, and here are a few posts:

Nayanthara will be next seen in her 65th film 'Netrikann' directed by Milind Rau and produced by her beau Vignesh Shivn. Seems like things are going well from the couple on the professional front as well. Good luck to the team and happy birthday, Vignesh!