"Oh guys feeling terrible bout being sick & missing out on the fun with d boys!Will bounce back & join the fun soon," the actress tweeted.
The Zoya Akhtar-helmed movie also stars Anil Kapoor, Priyanka Chopra, Shefali Shah, Farhan Akhtar and Ranveer Singh. It is set for a June 5 release.
Actors Anil, Ranveer and Farhan and producer Ritesh Sidhwani visited Kolkata to promote the movie during the Indian Premier League final at the Eden Gardens here.
During the day, they made an impromptu stop at the well-known confectionery K.C. Das on the way to the stadium and sampled delicacies like 'sandesh', 'mishti doi' and 'kheer'.
They also packed some up for their family members.