While the song "Engine Ki Seethi" is fast becoming a popular club track and is making its way through girls` locker rooms, the leads of 'Khoobsurat', Sonam Kapoor and Fawad Khan recently shot for a special promotional track titled "Maa Ka Phone".

Sharing the backstory of the quirky song Sonam said, "I have this special ringtone for every time my mother Manju (Kirron Kher) calls me and it goes Ma Ka Phone Ma Ka Phone on loop. We liked the ringtone so much that we thought of weaving a fun track around it". Adding that, "In the film my mom calls me every two minutes to know what am I doing, how am I and all. She is a little clingy and even ruins my romantic moment with Fawad".

While Sonam essays the role of fresh faced, charming and effervescent Milli, an endearing misfit in a royal setting, Fawad reprises the role of a straight jacketed royal prince in this romantic-comedy.

Produced by Walt Disney Pictures in association with Anil Kapoor Film Company, 'Khoobsurat' is directed by Shashanka Ghosh and it is slated for a September 19th worldwide release.

Watch 'Khoobsurat' Trailer