Katrina Kaif and sister Isabelle Kaif are at their STYLISH best at Ali Abbas Zafar's birthday bash

Director Ali Abbas Zafar today turned a year older and celebrated his birthday with close friends in the city. Ali’s close friend Katrina Kaif and her sister Isabelle Kaif also arrived at the bash.

Katrina looked uber-stylish in a purple outfit. She styled her look with nude makeup and high heels. The actress even posed with Ali after they exited the restaurant. 

Isabelle was also clicked exiting the restaurant. She looked gorgeous in a black outfit. 

Check out the pictures:

On Ali’s birthday, Katrina had shared a heart-warming message on her Instagram account. She captioned it saying,''Happy birthday buddy ... so proud of u .....what you've achieved is truly outstanding....the sky's the limit for u .... always stay all and keep telling me jokes that only u get.''

Katrina Kaif is currently riding high on the success of her latest release, Tiger Zinda Hai. Directed by Ali Abbas Zafar, the movie also stars Salman Khan in the lead role. 

Earlier during an interview, Ali was all praises for Katrina and had said, "I have worked with her on my first film, but we have been friends for almost 10 years. We are very close now. We have always been in touch with each other and also hung out with each other. I always told her, 'When I make my second film, I will only come to you. When I have something meaty I will definitely cast you.' When she also heard what we have done with Zoya's character, how we have made her in the second part, she instantly came on board. Katrina gave her 100 percent in training, martial arts workshops and everything; she got well into the character."

On the other hand, Isabelle Kaif has been signed on as the face of a leading beauty brand. Talking about the same, she had said, “I was here in Mumbai just visiting and happened to be doing some shoots when I heard (the brand) was looking for a new face. We invited them to come see me shoot and it just evolved from there.”