Karan Johar only directs a film every few years and the teaser of “Ae Dil Hai Mushkil” promises that the film, releasing four years after “Student of the Year,” is going to be worth the wait.

After being seen on the streets of London, Ae Dil hai Mushkil co-stars Ranbir Kapoor and Aishwarya Rai Bachchan were spotted once again, this time in Austria, filming a romantic sequence, reports Deccan Chronicle.