It's party time! KJo hosts star-studded bash for Katy Perry

Ahead of Katy Perry's performance here on Saturday, filmmaker Karan Johar hosted a star-studded bash for the international pop singer. From Aishwarya Rai Bachchan to Alia Bhatt, and from Shahid and Mira Kapoor to Anushka Sharma, Kiara Advani, Ananya Panday and Arjun Kapoor, several celebrities from B-Town were present at the welcome party. The Bollywood bash was held at filmmaker's Mumbai residence on Thursday evening.