As per reports, filmmaker Karan Johar recently revealed that he has got botox done. "I have put collagen on my forehead and adjusted my nose, I have done whatever everyone does in my industry," the 44-year-old filmmaker added. Notably, Karan Johar's directorial, 'Ae Dil Hai Mushkil' starring Ranbir Kapoor, Aishwarya Rai Bachchan and Anushka Sharma, hits the theatres on Friday.