Filmmaker Karan Johar, who is set to direct a film after three years, started the shoot of "Ae Dil Hai Mushkil" on Wednesday in London.

The "Student of the Year" director has cast Ranbir Kapoor, Anushka Sharma and Aishwarya Rai Bachchan in his flick.

Anushka and Ranbir have earlier shared screen space in "Bombay Velvet", which also featured KJo. However, it will be interesting to see Aishwarya, who will soon be seen in her comeback movie "Jazbaa", working with this team for the first time.

Produced by Dharma Productions, "Ae Dil Hai Mushkil" is being touted as a complicated love story. It will reportedly also feature Sunny Leone in a cameo role.

Karan shared the first look of the film on his Twitter handle, in which Ranbir and Anushka are seen posing with a clapper board. He captioned it as: "You can never meet with the demands of the heart....our journey begins today...#AeDilHaiMushkil."

Meanwhile, Sidharth Malhotra and Varun Dhawan wished the director good luck on its first day of shoot.

Abhishek Bachchan, Boman Irani and Riteish Deshmukh, who were also shooting in London for "Housefull 3", came to wish the "Ae Dil Hai Mushkil" team on their sets.

Also, few photos of the actors are doing the rounds on internet.

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