Katrina Kaif is reportedly worried that her chemistry with Ranbir Kapoor in "Jagga Jasoos" will be overshadowed by Ranbir and Deepika Padukone's chemistry in "Tamasha".

According to a report in DNA, Katrina, who will share screen space with boyfriend Ranbir in "Jagga Jasoos", has asked the makers of the film to raise the level of romance between her and Ranbir, after she watched the first trailer of "Tamasha".

"Katrina has been keeping a track of 'Tamasha' ever since the first promo came out. Enough has been said and written about whom Ranbir Kapoor makes the best pair with-Deepika or Katrina. Why is it important? It's simple. He is the hottest actor after the Khan triumvate, and whoever makes the hottest pair with him, will get the chance to act in more films with him," the report quoted a source as saying.

"Kat is worried that the DP-RK chemistry will overshadow her pairing with him. Her team has instructed Anurag to up the sizzle-ante between his lead pair. A major chunk of JJ will be shot in January and that's where the magic between Katrina and Ranbir will be captured," the source added.

The source also revealed that Katrina is aware of the comparisons being made between her and Deepika, in regard to pairing with Ranbir, and thus, she is not willing to take any chances with her upcoming release.

Directed by Imtiaz Ali, the movie "Tamasha" is slated to be released on 27 November, while Anurag Basu's "Jagga Jasoos" will hit theatres next year.