For the taping of Comedy Circus, it was a blue BCBG column gown for Kareena paired with earrings by Curio Cottage. From what we see, we like!
You can buy this dress from PoshFusion.com.
Left: Kareena Kapoor on Comedy Circus Set
Right: BCBG Viviane Halter Gown ( Buy )
Photo credit: Twitter/Tanya1Ghavri