Aishwarya, Alia, Anushka attend Karan Johar’s party for Katy Perry

Film maker Karan Johar threw a fancy welcome party for American singer Katy Perry. A host of Bollywood celebs also attended KJo's party. Katy is in India to perform at OnePlus Music Festival. The One Plus event will be held in Mumbai on November 16. Katy will be joined by international sensation Dua Lipa.