Mumbai, April 25 (IANS) Filmmaker Anurag Kashyap and actress Kalki Koechlin's wedding date is finalised - the two will tie the knot April 30 at the latter's home in Ooty.

"They have invited just 40 of their close friends for their marriage. They will throw a big party once they return to Mumbai where the whole Bollywood will be invited," said a source close to the couple.

Kalki, 28, confirmed the news that she is marrying Kashyap, 38, this year, but she had refused to reveal the wedding date as she wanted to keep it a private affair.

"Yes, we are getting married this year. I am not going to tell anyone the date, but I am getting married soon," Kalki, who made her Bollywood debut with Kashyap's 'Dev D' (2009), told IANS. The two have been dating each other for long.

What took them so long to decide to get married?

"We are engaged since January this year. When you marry a star, it's really tough to find dates for marriage (laughs)," said Kalki.

The actress, of French descent, will be seen in Bejoy Nambiar's directorial debut "Shaitan", which is produced by her fiance. Also, her much-talked about film, "The Girl in Yellow Boots", which she has co-written with Kashyap, is also set to release this year.

This is second marriage for Kashyap who was earlier married to his college sweetheart Aarti and has daughter Aaliya with her. He is known for directing "Black Friday" and "Dev D", and also co-produced multiple award winning movie "Udaan".