Sidharth Malhotra and Katrina Kaif are all set to share screen space together for the first time and it will be a romantic flick. The duo will appear as a couple who will be seen in different looks as they get older together.

It has been reported that the untitled film, to be directed by Nitya Mehra, will show Sidharth and Katrina getting older from the age of 30 to 60 and the two will have prosthetic make-up for the purpose.

"There are different age groups that we have to play in the film. I have to age as the character grows. I am playing a character who grows from the age of 28 to 46 to 60. And to play these parts is tougher for me. I am excited to try prosthetics look," PTI quoted Sidharth Malhotra as saying.

"I and Katrina are trying different looks. We have a great prosthetics team from London. We have an A grade team in make-up and prosthetics," Sidharth added.

To be produced by Farhan Akhtar, Sidharth says that it is a love story of two persons who are shown ageing together as the journey unfolds.

Sidharth Malhotra is apparently trying varied roles these days; he will be seen in "Brothers" as a fighter. The film features Akshay Kumar, Jacqueline Fernandez and Jackie Shroff and is a story of two brothers who eventually get into the ring to fight against each other.

Katrina Kaif has a number of upcoming projects including "Phantom", "Jagga Jasoos" and "Fitoor".