Karan Johar's BIG Bash For Katy Perry inside pics of Alia Bhatt, Aishwarya Rai, Anushka Sharma And Others Party With Pop Singer

Ahead of her Mumbai concert, Pop Singer Katy Perry decided to chill and have some good time with some Bollywood biggies. Thanks to Karan Johar who hosted a grand party last night evening, stars like Alia Bhatt, Aishwarya Rai, Anushka Sharma and others got to meet Katy