With Student Of The Year (2012), Karan Johar gave Bollywood three stars to watch out for -- Alia Bhatt, Varun Dhawan and Sidharth Malhotra. Now that the filmmaker has announced the sequel to the 2012 campus caper, with Tiger Shroff in the lead, many have been wondering if the stars of the original will make a cameo in the Punit Malhotra-directorial.