Priyanka tweeted a picture of the threesome together and wrote: "And it's wrap on some fabulous Koffee... Thank you Deepika Padukone for having my back and Karan Johar for having us."
The fourth season of the chat show goes on air Dec 1 on Star World. Superstar Salman Khan will feature in the opening episode along with his father Salim Khan.
It would be Salman's first appearance on "Koffee with Karan" since it began in 2004.