Kareena Kapoor Khan is reportedly set to reunite with Shah Rukh Khan for a special dance number in the upcoming film King. The song is expected to be shot in Mumbai from October 27, with choreographer Vaibhavi Merchant overseeing the sequence.According to a source, the track will draw on the energetic style of Shah Rukh and Kareena’s song 'Chammak Challo' from Ra.One.