For Karan Johar, Kajol seems to be a lucky charm, as there hasn't been a movie of his, were the beautiful actress hasn't featured. From his directorial debut Kuch Kuch Hota Hai to My Name Is Khan, Kajol has worked in almost all his projects.

Following the tradition, Kajol will be seen in Karan's upcoming movie, Student Of The Year. She will be doing a cameo in the song title, 'Disco Deewane', which is a remake of 1980s hit by Nazia Hassan, of the same name.

Karan Johar, confirming this news, says, "Kajol is in the disco song and she has danced with the boys (Siddharth Malhotra and Varun Dhawan). Kajol's presence is very important for me. She has been there in every film of mine and she has always been lucky."

The two newcomers, Siddarth Malhotra and Varun Dhawan, who are making their debut with this film, were super excited to have worked with her, in this track. They said that she stole the attention, when she walked into the sets. While the newcomers took 7 days to learn the steps, she picked up the steps within 15 minutes, which really surprised them.

Kajol has also done a cameo in the song 'Rock n Roll Soniye' from Kabhi Alvida Naa Kehna.

Lets hope, that this time too, Kajol's magic works for Karan.