They look a lot like Tom Ford, but the shades worn by Kareena were in fact Gucci.
The blue ones do look great, but you might want to consider a more generic color combo ( like the black/gold version available at SunglassHut ) because you can then pair the shades with more outfits. But, if you really really want the exact same one, try Solstice.
Left: Kareena Kapoor at ‘Kambakkht Ishq’ Press Meet
Right: Gucci GC2480 Shades
Photo Credit: Viral Bhayani