The couple officially announced details of their forthcoming wedding on Thursday.
Celebrities took to Twitter to wish the couple, who was seen on screen together in "Alone".
Here's what people had to wish for them:
Preity Zinta: Congratulations to my hottie Bipasha and Karan. Wish you both lots of love, happiness and togetherness now and forever. So happy for you.
Sushmita Sen: Yesssssss my beautiful Bipasha. Sooooooo happy for you both! Here's to blessed new beginnings! luv you.
Lara Dutta Bhupathi: Congratulations Bipasha. God bless you both! A lifetime of love and happiness.
Shilpa Shetty Kundra: Yaaaaayyy. Can't wait to see you become "BBG"...Bi Bi ji. Congratulations.
According to the information available so far, Bipasha will marry at her Khar residence, with only family and close friends from both sides in attendance. A reception is said to be planned later at St. Regis, formerly known as Palladium Hotel, in Lower Parel.
There will also be a mehendi ceremony on April 28 at Villa 69, a lounge bar in Juhu. But these details are yet to be officially confirmed.