A source says, "A lot of newcomers from Bollywood were present at the shoot. It was surprising to see Alia do that to Esha, especially as the latter was launched by her father Mahesh Bhatt."
Rumour is that it could have something to do with Esha chatting with a certain Siddharth Malhotra.
Another source present at the party says, "Esha and Siddharth were seen bonding big time. Both are from Delhi. That didn't go down well with Alia, especially because he was her first co-star."